Source: Las Vegas shooter left behind calculations for targeting crowd
Crime scene tape surrounds the Mandalay Hotel (background) after a gunman killed at least 50 people and wounded more than 200 others when he opened fire on a country music concert in Las Vegas, Nevada on October 2, 2017.
Police said the gunman, a 64-year-old local resident named as Stephen Paddock, had been killed after a SWAT team responded to reports of multiple gunfire from the 32nd floor of the Mandalay Bay, a hotel-casino next to the concert venue. / AFP PHOTO / Mark RALSTON (Photo credit should
Confusion, terror as concertgoers flee
LAS VEGAS, NV - OCTOBER 02: An injured person is tended to in the intersection of Tropicana Ave. and Las Vegas Boulevard after a mass shooting at a country music festival nearby on October 2, 2017 in Las Vegas, Nevada. A gunman has opened fire on a music festival in Las Vegas, killing over 20 people. Police have confirmed that one suspect has been shot dead. The investigation is ongoing. (Photo by Ethan Miller/Getty Images)
body cam video
Las Vegas police release bodycam video
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2016 video shows shooter's view
This undated photo provided by the Las Vegas Metropolitan Police Department shows Marilou Danley. Danley, 62, returned to the United States from the Philippines on Tuesday night, Oct. 3, 2017, and was met at Los Angeles International Airport by FBI agents, according to a law enforcement official. Authorities are trying to determine why Stephen Paddock, Danley's boyfriend, killed dozens of people in Las Vegas Oct. 1, in the deadliest mass shooting in modern U.S. history. (Las Vegas Metropolitan Police Department via AP, File)
Gunman's girlfriend being questioned by FBI
Stephen Paddock
Police: Las Vegas gunman planned an escape
Girlfriend's sisters: Paddock sent her away
Leaked photos published by the Daily Mail show the scene inside Stephen Paddock's room at the Mandalay Bay in Las Vegas.
Images show inside of shooter's hotel room
Crime scene tape surrounds the Mandalay Hotel (background) after a gunman killed at least 50 people and wounded more than 200 others when he opened fire on a country music concert in Las Vegas, Nevada on October 2, 2017.
Police said the gunman, a 64-year-old local resident named as Stephen Paddock, had been killed after a SWAT team responded to reports of multiple gunfire from the 32nd floor of the Mandalay Bay, a hotel-casino next to the concert venue. / AFP PHOTO / Mark RALSTON (Photo credit should read MARK RALSTON/AFP/Getty Images)
Shooter's angle prevented people from escaping
Las Vegas shooter brother background orig mg_00000608.jpg
Vegas shooter's brother in disbelief
LAS VEGAS, NV - OCTOBER 02: A cowboy hat lays in the street after shots were fired near a country music festival on October 1, 2017 in Las Vegas, Nevada. A gunman has opened fire on a music festival in Las Vegas, leaving at least 20 people dead and more than 100 injured. Police have confirmed that one suspect has been shot. The investigation is ongoing. (Photo by David Becker/Getty Images)
Confusion, terror as concertgoers flee
LAS VEGAS, NV - OCTOBER 02: An injured person is tended to in the intersection of Tropicana Ave. and Las Vegas Boulevard after a mass shooting at a country music festival nearby on October 2, 2017 in Las Vegas, Nevada. A gunman has opened fire on a music festival in Las Vegas, killing over 20 people. Police have confirmed that one suspect has been shot dead. The investigation is ongoing. (Photo by Ethan Miller/Getty Images)
Audio: Officers blast through shooter's door
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Brother: 'Like an asteroid fell out of the sky'
Man covers wife during shooting in Las Vegas ORIG TC_00010019.jpg
Las Vegas shooting: Rapid-fire shots
A note left by the Las Vegas shooter has been getting analyzed
Source: Shooter's note contained calculations
body cam video
Las Vegas police release bodycam video
las vegas shooters hotel room 2016 orig _00003509.jpg
2016 video shows shooter's view
This undated photo provided by the Las Vegas Metropolitan Police Department shows Marilou Danley. Danley, 62, returned to the United States from the Philippines on Tuesday night, Oct. 3, 2017, and was met at Los Angeles International Airport by FBI agents, according to a law enforcement official. Authorities are trying to determine why Stephen Paddock, Danley's boyfriend, killed dozens of people in Las Vegas Oct. 1, in the deadliest mass shooting in modern U.S. history. (Las Vegas Metropolitan Police Department via AP, File)
Gunman's girlfriend being questioned by FBI
Stephen Paddock
Police: Las Vegas gunman planned an escape
Girlfriend's sisters: Paddock sent her away
Leaked photos published by the Daily Mail show the scene inside Stephen Paddock's room at the Mandalay Bay in Las Vegas.
Images show inside of shooter's hotel room
Story highlights
A note in Paddock's hotel room contained written calculations, a source says
Authorities say the massacre was carefully planned but they still don't know motive
(CNN)A handwritten note in Stephen Paddock's hotel room contained calculations pertaining to the distance and trajectory from his 32nd-floor window to the crowd of concertgoers he targeted below, according to a law enforcement source with knowledge of the investigation.
CNN has previously reported that a note containing only numbers was found in the room. Those numbers were characterized as being significant to the gunman.
CBS News' "60 Minutes" first reported that Paddock's note contained handwritten calculations.
The note was found in the hotel suite at the Mandalay Bay Resort and Casino among 23 firearms, ammunition and the gunman's dead body. Paddock took his own life, authorities have said, after killing 58 people and wounding nearly 500.
Investigators have been combing through evidence left behind and Paddock's background for any hint as to what led the retired accountant to amass an arsenal of high-powered assault rifles, meticulously map out an attack and open fire on the crowd at last weekend's Route 91 Harvest Festival.
No sign of motive in sea of tips
Authorities have no credible information about Paddock's motive despite more than 1,000 leads and tips, Undersheriff Kevin C. McMahill said at a news conference Friday.
The unknowable Stephen Paddock and the ultimate mystery: Why?
The unknowable Stephen Paddock and the ultimate mystery: Why?
In the news briefing and an interview with CNN's Wolf Blitzer, McMahill released more details about the shooting and investigation Friday, including:
• A Mandalay Bay security guard who authorities believe drew Paddock's attention toward the hallway outside his hotel suite went to that floor to respond to an alarm due to an open door near Paddock's room. The guard, Jesus Campos, was shot in the leg while checking on the alarm. According to a police-reported timeline, Paddock never fired on the crowd below again after that.
Vegas police investigating if gunman had help
Vegas police investigating if gunman had help 03:06
• The alarm from a room "a number of doors down" from Paddock's likely was a coincidence. The door was not forced open, had been open for a while and Paddock didn't have the keys to that room. McMahill said that door either had been left open or didn't shut completely.
• Investigators looking into Sunday's massacre have found no known nexus to terrorism or connections to ISIS.
• Authorities are confident there was not another shooter in Paddock's room but are still trying to determine whether anyone else knew of his plans.
Las Vegas gunman's gambling under scrutiny 03:05
• Authorities do not believe another person used Paddock's room key at the Mandalay Bay hotel.
• Investigators have reviewed "voluminous amounts of video" from different locations, including Mandalay Bay, and have not seen any other person they think at this point is another suspect.
• Asked about video on which Paddock might have discussed motive, McMahill said: "I am not aware that we have recovered any such video."
• Police don't know what the killer was going to do with 50 pounds of explosives found in his car.
• Paddock brought the 23 guns and ammunition he had in his hotel suite over the course of several days, the undersheriff told CNN.
• Paddock's girlfriend, Marilou Danley, continues to cooperate with investigators, her lawyer and McMahill each said Friday. Attorney Matthew Lombard said Danley wouldn't be making any more public statements in the near future.
Pence honors massacre victims
Vice President Mike Pence offered prayers and words of comfort for Las Vegas on Saturday, as he and his wife participated in a citywide "unity prayer walk" in honor of the shooting victims.
"We are with you today. Today we are all Vegas strong," Pence told participants gathered at City Hall. "President Trump personally asked us to be here to stand with you, to pray with you, for strength, comfort and healing."
The President visited Las Vegas on Wednesday. Like Trump, Pence praised first responders, saying, "Their actions undoubtedly saved lives that night."
"We find hope in the heroic actions in the Las Vegas Metropolitan Police Department, the fire department and all the first responders on that night who, without regard for their personal safety, rushed into harm's way," Pence said.
The vice president called the shooting "a tragedy of unimaginable proportions" and said, "Las Vegas came face to face with pure evil" that night.
Request to seize shooter's assets
The family of one of the concertgoers killed last weekend is asking a Nevada court to appoint a special administrator to take control of the shooter's assets.
John Phippen, 56, of Santa Clarita, California, was at the festival with his son Travis when the shooting started. When the son, a medic, stopped to help someone, Phippen stayed with him and was shielding a woman when he was shot dead, said a neighbor, Leah Nagiyvanyi.
Las Vegas victims
Attorneys for Phippen's family filed the petition Friday in District Court in Clark County. The petition asks a judge to appoint the county's public administrator to account for and control Paddock's estate -- in part to make it available for any future lawsuits filed by the shooting victims.
Paddock, a gambler and retired accountant, owned a home in Mesquite, Nevada, and his brother has said he was a successful real estate investor who owned apartments and houses. Sales agents told CNN that Paddock paid $369,022 in cash for his Mesquite home in 2014.
The court "will notify (Paddock's) family members, and we'll see where this goes," said Richard A. Patterson, a California attorney representing Phippen's son Travis.
"We want (Paddock's estate) administered by the court. I don't think we're at the bottom of (Paddock's assets)," Patterson said.
"We want someone to oversee the assets so it stays the way it is," said Nevada-based probate attorney Richard Chatwin, who is working with Patterson on the petition.
Source: Shooter tried to buy tracer rounds
Paddock tried to buy tracer ammunition at a gun show in the Phoenix area in recent weeks, a law enforcement official briefed on the investigation told CNN.
33 gun purchases, no red flags
33 gun purchases, no red flags 02:51
Paddock bought other ammunition at the show, but he couldn't obtain the tracer ammunition -- bullets with a pyrotechnic charge that, when the round is fired, leaves an illuminated trace of its path -- because the vendor didn't have any to sell, the official said.
Paddock did not use tracer bullets when he fired into the festival crowd hundreds of yards away.
The official explained that if Paddock had tracer ammunition, he could have had a more precise idea of where his shots were going in the darkness, and could have been more accurate.
Shooters wanting greater accuracy often mix tracer rounds with non-tracers -- perhaps having one tracer every fifth round in a magazine, said Art Roderick, a CNN law enforcement analyst.
"It allows you to keep your weapon on not necessarily a specific target, but a specific area. ... There would have been a lot higher casualty rate if he had tracer rounds," said Roderick, a former assistant director of the US Marshals Service.
New video shows concertgoers fleeing scene 02:57
But tracer rounds also could have allowed police to see Paddock's location more quickly, CNN law enforcement analyst James Gagliano said.
Without the tracer ammunition, Paddock's location was difficult to determine from the outside, said Gagliano, a retired FBI supervisory special agent.
"The barrel of the rifle -- we could not see muzzle flashes, from the angles I've seen on videos, which meant that he was ... pulled back inside," Gagliano said.
A source close to the investigation told CNN on Friday that authorities think Paddock might have fired at massive jet fuel tanks at McCarran International Airport near his hotel before shooting at the concert crowd.
READ MORE: Why does Paddock's motive matter?
Did Paddock want to escape?
Six days after the mass shooting, authorities are trying to determine the motivation of the retired accountant, who had no criminal record and did not raise any flags while accumulating his arsenal of weapons.
What we know about the Las Vegas gunman 01:41
In addition to the weapons in his hotel suite, Paddock had more than 50 pounds of exploding targets and 1,600 rounds of ammunition in his car in the hotel parking lot, police said, fueling suspicion he intended to survive the massacre.
McMahill said Friday there was no evidence that Paddock intended to use the target material for a homemade bomb.
Escape, in this case, might have meant using the equipment in the car for further assaults until he got caught, said John Sheahan, a former Las Vegas SWAT team member.
"There's one of three ways it's going to end for an active shooter, and they pretty much all know this. You're either going to commit suicide; you're going to ... shoot it out with (police) and you're going to be killed, or you're going to continue on a preplanned rampage at locations B, C, D and E until the police finally stop you," Sheahan said.
Jiverly Wong shot and killed 13 people at the American Civic Association in Binghamton, New York, before turning the gun on himself in April 2009, police said. Four other people were injured at the <a href="http://www.cnn.com/2009/CRIME/04/08/ny.shooting/index.html?iref=allsearch" target="_blank">immigration center shooting.</a> Wong had been taking English classes at the center.
Photos: Worst mass shootings in the United States
Jiverly Wong shot and killed 13 people at the American Civic Association in Binghamton, New York, before turning the gun on himself in April 2009, police said. Four other people were injured at the immigration center shooting. Wong had been taking English classes at the center.
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Pallbearers carry a casket of one of <a href="http://www.cnn.com/2009/CRIME/03/11/alabama.shooting.timeline/index.html?iref=allsearch" target="_blank">Michael McLendon's</a> 10 victims. McLendon shot and killed his mother in her Kingston, Alabama, home, before shooting his aunt, uncle, grandparents and five more people. He shot and killed himself in Samson, Alabama, in March 2009.
Photos: Worst mass shootings in the United States
Pallbearers carry a casket of one of Michael McLendon's 10 victims. McLendon shot and killed his mother in her Kingston, Alabama, home, before shooting his aunt, uncle, grandparents and five more people. He shot and killed himself in Samson, Alabama, in March 2009.
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<a href="http://www.cnn.com/SPECIALS/2007/virginiatech.shootings/" target="_blank">Virginia Tech</a> student Seung-Hui Cho went on a shooting spree on the school's campus in April 2007. Cho killed two people at the West Ambler Johnston dormitory and, after chaining the doors closed, killed another 30 at Norris Hall, home to the Engineering Science and Mechanics Department. He wounded an additional 17 people before killing himself.
Photos: Worst mass shootings in the United States
Virginia Tech student Seung-Hui Cho went on a shooting spree on the school's campus in April 2007. Cho killed two people at the West Ambler Johnston dormitory and, after chaining the doors closed, killed another 30 at Norris Hall, home to the Engineering Science and Mechanics Department. He wounded an additional 17 people before killing himself.
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<a href="http://www.cnn.com/US/9907/29/atlanta.shooting.01/index.html?iref=allsearch" target="_blank">Mark Barton</a> walked into two Atlanta trading firms and fired shots in July 1999, leaving nine dead and 13 wounded, police said. Hours later, police found Barton at a gas station in Acworth, Georgia, where he pulled a gun and killed himself. The day before, Barton had bludgeoned his wife and his two children in their Stockbridge, Georgia, apartment, police said.
Photos: Worst mass shootings in the United States
Mark Barton walked into two Atlanta trading firms and fired shots in July 1999, leaving nine dead and 13 wounded, police said. Hours later, police found Barton at a gas station in Acworth, Georgia, where he pulled a gun and killed himself. The day before, Barton had bludgeoned his wife and his two children in their Stockbridge, Georgia, apartment, police said.
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Eric Harris, left, and Dylan Klebold brought guns and bombs to <a href="http://www.cnn.com/US/9904/20/school.shooting.03/index.html?iref=allsearch" target="_blank">Columbine High School</a> in Littleton, Colorado, in April 1999. The students gunned down 13 and wounded 23 before killing themselves.
Photos: Worst mass shootings in the United States
Eric Harris, left, and Dylan Klebold brought guns and bombs to Columbine High School in Littleton, Colorado, in April 1999. The students gunned down 13 and wounded 23 before killing themselves.
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In October 1991, <a href="http://www.cnn.com/2009/US/03/11/killeen.mass.shooting/index.html?iref=allsearch" target="_blank">George Hennard</a> crashed his pickup through the plate-glass window of Luby's Cafeteria in Killeen, Texas, before shooting 23 people and committing suicide.
Photos: Worst mass shootings in the United States
In October 1991, George Hennard crashed his pickup through the plate-glass window of Luby's Cafeteria in Killeen, Texas, before shooting 23 people and committing suicide.
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<a href="http://www.cnn.com/2009/CRIME/07/23/california.mcdonalds.massacre/index.html?iref=allsearch" target="_blank">James Huberty</a> shot and killed 21 people, including children, at a McDonald's in San Ysidro, California, in July 1984. A police sharpshooter killed Huberty an hour after the rampage began.
Photos: Worst mass shootings in the United States
James Huberty shot and killed 21 people, including children, at a McDonald's in San Ysidro, California, in July 1984. A police sharpshooter killed Huberty an hour after the rampage began.
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Prison guard George Banks is led through the Luzerne County courthouse in 1985. Banks killed 13 people, including five of his children, in Wilkes-Barre, Pennsylvania, in September 1982. He was sentenced to death in 1993 and received a stay of execution in 2004. His death sentence was overturned in 2010.
Photos: Worst mass shootings in the United States
Prison guard George Banks is led through the Luzerne County courthouse in 1985. Banks killed 13 people, including five of his children, in Wilkes-Barre, Pennsylvania, in September 1982. He was sentenced to death in 1993 and received a stay of execution in 2004. His death sentence was overturned in 2010.
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Officers in Austin, Texas, carry victims across the University of Texas campus after Charles Joseph Whitman opened fire from the school's tower, killing 16 people and wounding 30 in 1966. Police officers shot and killed Whitman, who had killed his mother and wife earlier in the day.
Photos: Worst mass shootings in the United States
Officers in Austin, Texas, carry victims across the University of Texas campus after Charles Joseph Whitman opened fire from the school's tower, killing 16 people and wounding 30 in 1966. Police officers shot and killed Whitman, who had killed his mother and wife earlier in the day.
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Howard Unruh, a World War II veteran, shot and killed 13 of his neighbors in Camden, New Jersey, in 1949. Unruh barricaded himself in his house after the shooting. Police overpowered him the next day. He was ruled criminally insane and committed to a state mental institution.
Photos: Worst mass shootings in the United States
Howard Unruh, a World War II veteran, shot and killed 13 of his neighbors in Camden, New Jersey, in 1949. Unruh barricaded himself in his house after the shooting. Police overpowered him the next day. He was ruled criminally insane and committed to a state mental institution.
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A couple huddles after shots rang out at a country music festival on the Las Vegas Strip on Sunday, October 1. At least 58 people were killed and almost 500 were injured when <a href="http://www.cnn.com/2017/10/02/us/las-vegas-shooter/index.html" target="_blank">a gunman opened fire</a> on the crowd. Police said the gunman, 64-year-old Stephen Paddock, fired from the Mandalay Bay hotel, several hundred feet southwest of the concert grounds. He was found dead in his hotel room, and authorities believe he killed himself and that he acted alone. It is the deadliest mass shooting in modern US history.
Photos: Worst mass shootings in the United States
A couple huddles after shots rang out at a country music festival on the Las Vegas Strip on Sunday, October 1. At least 58 people were killed and almost 500 were injured when a gunman opened fire on the crowd. Police said the gunman, 64-year-old Stephen Paddock, fired from the Mandalay Bay hotel, several hundred feet southwest of the concert grounds. He was found dead in his hotel room, and authorities believe he killed himself and that he acted alone. It is the deadliest mass shooting in modern US history.
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Police direct family members away from the scene of a shooting at the Pulse nightclub in Orlando in June 2016. Omar Mateen, 29, <a href="http://www.cnn.com/2016/06/12/us/orlando-nightclub-shooting/index.html" target="_blank">opened fire inside the club,</a> killing at least 49 people and injuring more than 50. Police fatally shot Mateen during an operation to free hostages that officials say he was holding at the club.
Photos: Worst mass shootings in the United States
Police direct family members away from the scene of a shooting at the Pulse nightclub in Orlando in June 2016. Omar Mateen, 29, opened fire inside the club, killing at least 49 people and injuring more than 50. Police fatally shot Mateen during an operation to free hostages that officials say he was holding at the club.
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In December 2015, <a href="http://www.cnn.com/2015/12/06/us/san-bernardino-shooting-what-we-know/">two shooters killed 14 people and injured 21</a> at the Inland Regional Center in San Bernardino, California, where employees with the county health department were attending a holiday event. The shooters, Syed Rizwan Farook and his wife Tashfeen Malik, were later killed in a shootout with authorities. The pair were found to be radicalized extremists who planned the shootings as a terror attack, investigators said.
Photos: Worst mass shootings in the United States
In December 2015, two shooters killed 14 people and injured 21 at the Inland Regional Center in San Bernardino, California, where employees with the county health department were attending a holiday event. The shooters, Syed Rizwan Farook and his wife Tashfeen Malik, were later killed in a shootout with authorities. The pair were found to be radicalized extremists who planned the shootings as a terror attack, investigators said.
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Police search students outside Umpqua Community College after <a href="http://www.cnn.com/2015/10/01/us/gallery/oregon-shooting-umpqua-community-college/index.html" target="_blank">a deadly shooting</a> at the school in Roseburg, Oregon, in October 2015. Nine people were killed and at least nine were injured, police said. The gunman, Chris Harper-Mercer, committed suicide after exchanging gunfire with officers, a sheriff said.
Photos: Worst mass shootings in the United States
Police search students outside Umpqua Community College after a deadly shooting at the school in Roseburg, Oregon, in October 2015. Nine people were killed and at least nine were injured, police said. The gunman, Chris Harper-Mercer, committed suicide after exchanging gunfire with officers, a sheriff said.
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A man kneels across the street from the historic Emanuel African Methodist Episcopal Church in Charleston, South Carolina, <a href="http://www.cnn.com/2015/06/18/us/gallery/charleston-south-carolina-church-shooting/index.html" target="_blank">following a shooting</a> in June 2015. Police say the suspect, Dylann Roof, opened fire inside the church, killing nine people. According to police, Roof confessed and told investigators he wanted to start a race war. <a href="http://www.cnn.com/2017/01/10/us/dylann-roof-trial/index.html" target="_blank">He was eventually convicted</a> of murder and hate crimes, and a jury recommended the death penalty.
Photos: Worst mass shootings in the United States
A man kneels across the street from the historic Emanuel African Methodist Episcopal Church in Charleston, South Carolina, following a shooting in June 2015. Police say the suspect, Dylann Roof, opened fire inside the church, killing nine people. According to police, Roof confessed and told investigators he wanted to start a race war. He was eventually convicted of murder and hate crimes, and a jury recommended the death penalty.
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Police officers walk on a rooftop at the Washington Navy Yard after a <a href="http://www.cnn.com/2013/09/16/us/dc-navy-yard-gunshots/index.html">shooting rampage</a> in the nation's capital in September 2013. At least 12 people and suspect Aaron Alexis were killed, according to authorities.
Photos: Worst mass shootings in the United States
Police officers walk on a rooftop at the Washington Navy Yard after a shooting rampage in the nation's capital in September 2013. At least 12 people and suspect Aaron Alexis were killed, according to authorities.
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Connecticut State Police evacuate <a href="http://www.cnn.com/2012/12/14/us/connecticut-school-shooting/index.html" target="_blank">Sandy Hook Elementary School</a> in Newtown, Connecticut, in December 2012. Adam Lanza opened fire in the school, killing 20 children and six adults before killing himself. Police said he also shot and killed his mother in her Newtown home.
Photos: Worst mass shootings in the United States
Connecticut State Police evacuate Sandy Hook Elementary School in Newtown, Connecticut, in December 2012. Adam Lanza opened fire in the school, killing 20 children and six adults before killing himself. Police said he also shot and killed his mother in her Newtown home.
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<a href="http://www.cnn.com/2012/07/20/us/colorado-theater-shooting/index.html" target="_blank">James Holmes</a> pleaded not guilty by reason of insanity to a July 2012 shooting at a movie theater in Aurora, Colorado. Twelve people were killed and dozens were wounded when Holmes opened fire during the midnight premiere of "The Dark Knight Rises." He was sentenced to 12 life terms plus thousands of years in prison.
Photos: Worst mass shootings in the United States
James Holmes pleaded not guilty by reason of insanity to a July 2012 shooting at a movie theater in Aurora, Colorado. Twelve people were killed and dozens were wounded when Holmes opened fire during the midnight premiere of "The Dark Knight Rises." He was sentenced to 12 life terms plus thousands of years in prison.
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A military jury convicted Army Maj. <a href="http://www.cnn.com/2013/08/28/us/nidal-hasan-sentencing/index.html" target="_blank">Nidal Hasan</a> of 13 counts of premeditated murder for a November 2009 shooting rampage at Fort Hood, Texas. Thirteen people died and 32 were injured.
Photos: Worst mass shootings in the United States
A military jury convicted Army Maj. Nidal Hasan of 13 counts of premeditated murder for a November 2009 shooting rampage at Fort Hood, Texas. Thirteen people died and 32 were injured.
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Jiverly Wong shot and killed 13 people at the American Civic Association in Binghamton, New York, before turning the gun on himself in April 2009, police said. Four other people were injured at the <a href="http://www.cnn.com/2009/CRIME/04/08/ny.shooting/index.html?iref=allsearch" target="_blank">immigration center shooting.</a> Wong had been taking English classes at the center.
Photos: Worst mass shootings in the United States
Jiverly Wong shot and killed 13 people at the American Civic Association in Binghamton, New York, before turning the gun on himself in April 2009, police said. Four other people were injured at the immigration center shooting. Wong had been taking English classes at the center.
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Pallbearers carry a casket of one of <a href="http://www.cnn.com/2009/CRIME/03/11/alabama.shooting.timeline/index.html?iref=allsearch" target="_blank">Michael McLendon's</a> 10 victims. McLendon shot and killed his mother in her Kingston, Alabama, home, before shooting his aunt, uncle, grandparents and five more people. He shot and killed himself in Samson, Alabama, in March 2009.
Photos: Worst mass shootings in the United States
Pallbearers carry a casket of one of Michael McLendon's 10 victims. McLendon shot and killed his mother in her Kingston, Alabama, home, before shooting his aunt, uncle, grandparents and five more people. He shot and killed himself in Samson, Alabama, in March 2009.
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<a href="http://www.cnn.com/SPECIALS/2007/virginiatech.shootings/" target="_blank">Virginia Tech</a> student Seung-Hui Cho went on a shooting spree on the school's campus in April 2007. Cho killed two people at the West Ambler Johnston dormitory and, after chaining the doors closed, killed another 30 at Norris Hall, home to the Engineering Science and Mechanics Department. He wounded an additional 17 people before killing himself.
Photos: Worst mass shootings in the United States
Virginia Tech student Seung-Hui Cho went on a shooting spree on the school's campus in April 2007. Cho killed two people at the West Ambler Johnston dormitory and, after chaining the doors closed, killed another 30 at Norris Hall, home to the Engineering Science and Mechanics Department. He wounded an additional 17 people before killing himself.
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<a href="http://www.cnn.com/US/9907/29/atlanta.shooting.01/index.html?iref=allsearch" target="_blank">Mark Barton</a> walked into two Atlanta trading firms and fired shots in July 1999, leaving nine dead and 13 wounded, police said. Hours later, police found Barton at a gas station in Acworth, Georgia, where he pulled a gun and killed himself. The day before, Barton had bludgeoned his wife and his two children in their Stockbridge, Georgia, apartment, police said.
Photos: Worst mass shootings in the United States
Mark Barton walked into two Atlanta trading firms and fired shots in July 1999, leaving nine dead and 13 wounded, police said. Hours later, police found Barton at a gas station in Acworth, Georgia, where he pulled a gun and killed himself. The day before, Barton had bludgeoned his wife and his two children in their Stockbridge, Georgia, apartment, police said.
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Eric Harris, left, and Dylan Klebold brought guns and bombs to <a href="http://www.cnn.com/US/9904/20/school.shooting.03/index.html?iref=allsearch" target="_blank">Columbine High School</a> in Littleton, Colorado, in April 1999. The students gunned down 13 and wounded 23 before killing themselves.
Photos: Worst mass shootings in the United States
Eric Harris, left, and Dylan Klebold brought guns and bombs to Columbine High School in Littleton, Colorado, in April 1999. The students gunned down 13 and wounded 23 before killing themselves.
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In October 1991, <a href="http://www.cnn.com/2009/US/03/11/killeen.mass.shooting/index.html?iref=allsearch" target="_blank">George Hennard</a> crashed his pickup through the plate-glass window of Luby's Cafeteria in Killeen, Texas, before shooting 23 people and committing suicide.
Photos: Worst mass shootings in the United States
In October 1991, George Hennard crashed his pickup through the plate-glass window of Luby's Cafeteria in Killeen, Texas, before shooting 23 people and committing suicide.
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<a href="http://www.cnn.com/2009/CRIME/07/23/california.mcdonalds.massacre/index.html?iref=allsearch" target="_blank">James Huberty</a> shot and killed 21 people, including children, at a McDonald's in San Ysidro, California, in July 1984. A police sharpshooter killed Huberty an hour after the rampage began.
Photos: Worst mass shootings in the United States
James Huberty shot and killed 21 people, including children, at a McDonald's in San Ysidro, California, in July 1984. A police sharpshooter killed Huberty an hour after the rampage began.
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Prison guard George Banks is led through the Luzerne County courthouse in 1985. Banks killed 13 people, including five of his children, in Wilkes-Barre, Pennsylvania, in September 1982. He was sentenced to death in 1993 and received a stay of execution in 2004. His death sentence was overturned in 2010.
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Prison guard George Banks is led through the Luzerne County courthouse in 1985. Banks killed 13 people, including five of his children, in Wilkes-Barre, Pennsylvania, in September 1982. He was sentenced to death in 1993 and received a stay of execution in 2004. His death sentence was overturned in 2010.
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Officers in Austin, Texas, carry victims across the University of Texas campus after Charles Joseph Whitman opened fire from the school's tower, killing 16 people and wounding 30 in 1966. Police officers shot and killed Whitman, who had killed his mother and wife earlier in the day.
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Officers in Austin, Texas, carry victims across the University of Texas campus after Charles Joseph Whitman opened fire from the school's tower, killing 16 people and wounding 30 in 1966. Police officers shot and killed Whitman, who had killed his mother and wife earlier in the day.
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Howard Unruh, a World War II veteran, shot and killed 13 of his neighbors in Camden, New Jersey, in 1949. Unruh barricaded himself in his house after the shooting. Police overpowered him the next day. He was ruled criminally insane and committed to a state mental institution.
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Howard Unruh, a World War II veteran, shot and killed 13 of his neighbors in Camden, New Jersey, in 1949. Unruh barricaded himself in his house after the shooting. Police overpowered him the next day. He was ruled criminally insane and committed to a state mental institution.
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A couple huddles after shots rang out at a country music festival on the Las Vegas Strip on Sunday, October 1. At least 58 people were killed and almost 500 were injured when <a href="http://www.cnn.com/2017/10/02/us/las-vegas-shooter/index.html" target="_blank">a gunman opened fire</a> on the crowd. Police said the gunman, 64-year-old Stephen Paddock, fired from the Mandalay Bay hotel, several hundred feet southwest of the concert grounds. He was found dead in his hotel room, and authorities believe he killed himself and that he acted alone. It is the deadliest mass shooting in modern US history.
Photos: Worst mass shootings in the United States
A couple huddles after shots rang out at a country music festival on the Las Vegas Strip on Sunday, October 1. At least 58 people were killed and almost 500 were injured when a gunman opened fire on the crowd. Police said the gunman, 64-year-old Stephen Paddock, fired from the Mandalay Bay hotel, several hundred feet southwest of the concert grounds. He was found dead in his hotel room, and authorities believe he killed himself and that he acted alone. It is the deadliest mass shooting in modern US history.
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Police direct family members away from the scene of a shooting at the Pulse nightclub in Orlando in June 2016. Omar Mateen, 29, <a href="http://www.cnn.com/2016/06/12/us/orlando-nightclub-shooting/index.html" target="_blank">opened fire inside the club,</a> killing at least 49 people and injuring more than 50. Police fatally shot Mateen during an operation to free hostages that officials say he was holding at the club.
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Police direct family members away from the scene of a shooting at the Pulse nightclub in Orlando in June 2016. Omar Mateen, 29, opened fire inside the club, killing at least 49 people and injuring more than 50. Police fatally shot Mateen during an operation to free hostages that officials say he was holding at the club.
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In December 2015, <a href="http://www.cnn.com/2015/12/06/us/san-bernardino-shooting-what-we-know/">two shooters killed 14 people and injured 21</a> at the Inland Regional Center in San Bernardino, California, where employees with the county health department were attending a holiday event. The shooters, Syed Rizwan Farook and his wife Tashfeen Malik, were later killed in a shootout with authorities. The pair were found to be radicalized extremists who planned the shootings as a terror attack, investigators said.
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In December 2015, two shooters killed 14 people and injured 21 at the Inland Regional Center in San Bernardino, California, where employees with the county health department were attending a holiday event. The shooters, Syed Rizwan Farook and his wife Tashfeen Malik, were later killed in a shootout with authorities. The pair were found to be radicalized extremists who planned the shootings as a terror attack, investigators said.
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Police search students outside Umpqua Community College after <a href="http://www.cnn.com/2015/10/01/us/gallery/oregon-shooting-umpqua-community-college/index.html" target="_blank">a deadly shooting</a> at the school in Roseburg, Oregon, in October 2015. Nine people were killed and at least nine were injured, police said. The gunman, Chris Harper-Mercer, committed suicide after exchanging gunfire with officers, a sheriff said.
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Police search students outside Umpqua Community College after a deadly shooting at the school in Roseburg, Oregon, in October 2015. Nine people were killed and at least nine were injured, police said. The gunman, Chris Harper-Mercer, committed suicide after exchanging gunfire with officers, a sheriff said.
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A man kneels across the street from the historic Emanuel African Methodist Episcopal Church in Charleston, South Carolina, <a href="http://www.cnn.com/2015/06/18/us/gallery/charleston-south-carolina-church-shooting/index.html" target="_blank">following a shooting</a> in June 2015. Police say the suspect, Dylann Roof, opened fire inside the church, killing nine people. According to police, Roof confessed and told investigators he wanted to start a race war. <a href="http://www.cnn.com/2017/01/10/us/dylann-roof-trial/index.html" target="_blank">He was eventually convicted</a> of murder and hate crimes, and a jury recommended the death penalty.
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A man kneels across the street from the historic Emanuel African Methodist Episcopal Church in Charleston, South Carolina, following a shooting in June 2015. Police say the suspect, Dylann Roof, opened fire inside the church, killing nine people. According to police, Roof confessed and told investigators he wanted to start a race war. He was eventually convicted of murder and hate crimes, and a jury recommended the death penalty.
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Police officers walk on a rooftop at the Washington Navy Yard after a <a href="http://www.cnn.com/2013/09/16/us/dc-navy-yard-gunshots/index.html">shooting rampage</a> in the nation's capital in September 2013. At least 12 people and suspect Aaron Alexis were killed, according to authorities.
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Police officers walk on a rooftop at the Washington Navy Yard after a shooting rampage in the nation's capital in September 2013. At least 12 people and suspect Aaron Alexis were killed, according to authorities.
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Connecticut State Police evacuate <a href="http://www.cnn.com/2012/12/14/us/connecticut-school-shooting/index.html" target="_blank">Sandy Hook Elementary School</a> in Newtown, Connecticut, in December 2012. Adam Lanza opened fire in the school, killing 20 children and six adults before killing himself. Police said he also shot and killed his mother in her Newtown home.
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Connecticut State Police evacuate Sandy Hook Elementary School in Newtown, Connecticut, in December 2012. Adam Lanza opened fire in the school, killing 20 children and six adults before killing himself. Police said he also shot and killed his mother in her Newtown home.
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<a href="http://www.cnn.com/2012/07/20/us/colorado-theater-shooting/index.html" target="_blank">James Holmes</a> pleaded not guilty by reason of insanity to a July 2012 shooting at a movie theater in Aurora, Colorado. Twelve people were killed and dozens were wounded when Holmes opened fire during the midnight premiere of "The Dark Knight Rises." He was sentenced to 12 life terms plus thousands of years in prison.
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James Holmes pleaded not guilty by reason of insanity to a July 2012 shooting at a movie theater in Aurora, Colorado. Twelve people were killed and dozens were wounded when Holmes opened fire during the midnight premiere of "The Dark Knight Rises." He was sentenced to 12 life terms plus thousands of years in prison.
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A military jury convicted Army Maj. <a href="http://www.cnn.com/2013/08/28/us/nidal-hasan-sentencing/index.html" target="_blank">Nidal Hasan</a> of 13 counts of premeditated murder for a November 2009 shooting rampage at Fort Hood, Texas. Thirteen people died and 32 were injured.
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A military jury convicted Army Maj. Nidal Hasan of 13 counts of premeditated murder for a November 2009 shooting rampage at Fort Hood, Texas. Thirteen people died and 32 were injured.
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Jiverly Wong shot and killed 13 people at the American Civic Association in Binghamton, New York, before turning the gun on himself in April 2009, police said. Four other people were injured at the <a href="http://www.cnn.com/2009/CRIME/04/08/ny.shooting/index.html?iref=allsearch" target="_blank">immigration center shooting.</a> Wong had been taking English classes at the center.
Photos: Worst mass shootings in the United States
Jiverly Wong shot and killed 13 people at the American Civic Association in Binghamton, New York, before turning the gun on himself in April 2009, police said. Four other people were injured at the immigration center shooting. Wong had been taking English classes at the center.
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"He rented the room in his own name. He's already on video coming in and out. We know who he is. He's going to be the most wanted man in the world if he does try to leave here," he added.
