What we learned from the Las Vegas shooting report

By Dakin Andone and Sara Sidner, CNN
Updated 7:10 PM EST, Fri January 19, 2018
(CNN) —  

Authorities on Friday released a preliminary investigative report on the Las Vegas shooting in response to large public interest in the case.

Many questions – such as the motive – remain unanswered since the October 1 massacre in which 58 were killed and hundreds injured when the gunman, Stephen Paddock, opened fire on the Route 91 Harvest music festival from the 32nd floor of the Mandalay Bay Resort and Casino.

Clark County Sheriff Joe Lombardo said the FBI is investigating an individual of federal interest related to the case. Charges could be brought within 60 days, he said.

Here is what we have learned from the report.

New information about the investigation

A window broken by Paddock and the interior of his hotel room.
A window broken by Paddock and the interior of his hotel room.
PHOTO: LVMPD

• Authorities have determined how many victims were injured. Officials told reporters Friday that investigators determined 422 people suffered injuries as a direct result of gunfire, while another 851 individuals suffered other injuries during the attack. The report says all 22,000 people who attended the festival that night are recognized as victims.

31 victims were pronounced dead at the scene. The rest were pronounced dead at medical facilities they were taken to afterward. Police have previously said that 58 people died in the attack.

• Investigators have chased 1,965 leads in the case. They’ve also reviewed more than 21,000 hours of footage and issued 1,062 legal notices during the investigation.

Revelations about the gunman

• Investigators recovered “several hundred images of child pornography” on Paddock’s hard drive. The investigation into the images in ongoing, the report says. CNN previously reported that Paddock’s brother was charged with possession of child pornography.

The timeline of the Las Vegas shooting is still being revised, 11 days later: MGM now says it was not 6 minutes between the gunman shooting the guard, and the gunman shooting the crowd. It was at most 40 seconds (either before, or during.)
The timeline of the Las Vegas shooting is still being revised, 11 days later: MGM now says it was not 6 minutes between the gunman shooting the guard, and the gunman shooting the crowd. It was at most 40 seconds (either before, or during.)

Related Article Preliminary report on Las Vegas massacre does not reveal motive

• Paddock’s doctor believed he may be bipolar. According to the report, Paddock’s physician described him as “‘odd” in behavior with “little emotion’ shown.” Though he believed Paddock could have had bipolar disorder, Paddock “did not want to discuss that topic further with him.” Paddock refused anti-depressants but accepted prescriptions ordered for anxiety.

• He was described as “germaphobic.” Paddock also claimed multiple times to friends or family that he “felt ill, in pain or fatigued,” the report said.

• Paddock paid off all his gambling debts before the shooting. It’s already been reported that Paddock, a notorious gambler, was completely funded by his gambling habits and real estate transactions.

• Paddock’s demeanor changed over the last year. His girlfriend, Marilou Danley, told investigators he had become “distant,” the report says, “and their relationship was no longer intimate.”

• The shooter’s girlfriend believed buying guns was a hobby for Paddock. The 64-year-old purchased 55 firearms between October 2016 and September 2017, the report says. All of the guns recovered in the Mandalay Bay, with one exception, the report says, were purchased after September 2016.

Debris is scattered on the ground Monday, October 2, at the site of a country music festival held this past weekend in Las Vegas. Dozens of people were killed and hundreds were injured Sunday when a gunman opened fire on the crowd. Police said the gunman fired from the Mandalay Bay hotel, several hundred feet southwest of the concert grounds. It is the deadliest mass shooting in modern US history.
Photos: Mass shooting at Las Vegas music festival
Debris is scattered on the ground Monday, October 2, at the site of a country music festival held this past weekend in Las Vegas. Dozens of people were killed and hundreds were injured Sunday when a gunman opened fire on the crowd. Police said the gunman fired from the Mandalay Bay hotel, several hundred feet southwest of the concert grounds. It is the deadliest mass shooting in modern US history.
PHOTO: John Locher/AP
Broken windows of the Mandalay Bay are seen early in Las Vegas on Monday. Police said the gunman fired on the crowd from the 32nd floor of the hotel.
Photos: Mass shooting at Las Vegas music festival
Broken windows of the Mandalay Bay are seen early in Las Vegas on Monday. Police said the gunman fired on the crowd from the 32nd floor of the hotel.
PHOTO: John Locher/AP
People cross a street near the Las Vegas Strip just after sunrise on Monday. Thousands were attending the music festival, Route 91 Harvest, when the shooting started.
Photos: Mass shooting at Las Vegas music festival
People cross a street near the Las Vegas Strip just after sunrise on Monday. Thousands were attending the music festival, Route 91 Harvest, when the shooting started.
PHOTO: Ronda Churchill/AP
People embrace outside the Thomas & Mack Center after the shooting.
Photos: Mass shooting at Las Vegas music festival
People embrace outside the Thomas & Mack Center after the shooting.
PHOTO: Ethan Miller/Getty Images
Police arrive at the Sands Corporation plane hangar where some people ran to safety after the shooting.
Photos: Mass shooting at Las Vegas music festival
Police arrive at the Sands Corporation plane hangar where some people ran to safety after the shooting.
PHOTO: Powers Imagery/Invision/AP
A woman cries while hiding inside the Sands Corporation plane hangar.
Photos: Mass shooting at Las Vegas music festival
A woman cries while hiding inside the Sands Corporation plane hangar.
PHOTO: Powers Imagery/Invision/AP
Concertgoers dive over a fence to take cover from gunfire on Sunday night.
Photos: Mass shooting at Las Vegas music festival
Concertgoers dive over a fence to take cover from gunfire on Sunday night.
PHOTO: David Becker/Getty Images
Police take position outside the Mandalay Bay.
Photos: Mass shooting at Las Vegas music festival
Police take position outside the Mandalay Bay.
PHOTO: David Becker/Getty Images
A man lays on top of a woman as others flee the festival grounds. The woman reportedly got up from the scene.
Photos: Mass shooting at Las Vegas music festival
A man lays on top of a woman as others flee the festival grounds. The woman reportedly got up from the scene.
PHOTO: David Becker/Getty Images
Photos: Deadly earthquake rocks central Mexico
People are seen on the ground after the gunman opened fire.
Photos: Mass shooting at Las Vegas music festival
People are seen on the ground after the gunman opened fire.
PHOTO: David Becker/Getty Images
People run from the festival grounds.
Photos: Mass shooting at Las Vegas music festival
People run from the festival grounds.
PHOTO: David Becker/Getty Images
A woman is moved outside the Las Vegas Tropicana resort. Multiple victims were being transported to hospitals in the aftermath of the shooting.
Photos: Mass shooting at Las Vegas music festival
A woman is moved outside the Las Vegas Tropicana resort. Multiple victims were being transported to hospitals in the aftermath of the shooting.
PHOTO: Chase Stevens/AP
People are searched by police at the Tropicana.
Photos: Mass shooting at Las Vegas music festival
People are searched by police at the Tropicana.
PHOTO: Chase Stevens/AP
An ambulance leaves the intersection of Las Vegas Boulevard and Tropicana Avenue.
Photos: Mass shooting at Las Vegas music festival
An ambulance leaves the intersection of Las Vegas Boulevard and Tropicana Avenue.
PHOTO: Ethan Miller/Getty Images
A man in a wheelchair is evacuated from the festival after gunfire was heard.
Photos: Mass shooting at Las Vegas music festival
A man in a wheelchair is evacuated from the festival after gunfire was heard.
PHOTO: David Becker/Getty Images
Victims of the shooting are tended to in the street.
Photos: Mass shooting at Las Vegas music festival
Victims of the shooting are tended to in the street.
PHOTO: Ethan Miller/Getty Images
Concertgoers help an injured person at the scene.
Photos: Mass shooting at Las Vegas music festival
Concertgoers help an injured person at the scene.
PHOTO: David Becker/Getty Images
People gather around a victim outside the festival grounds.
Photos: Mass shooting at Las Vegas music festival
People gather around a victim outside the festival grounds.
PHOTO: David Becker/Getty Images
A couple huddles after shots rang out at the festival.
Photos: Mass shooting at Las Vegas music festival
A couple huddles after shots rang out at the festival.
PHOTO: David Becker/Getty Images
An injured woman is helped at the Tropicana.
Photos: Mass shooting at Las Vegas music festival
An injured woman is helped at the Tropicana.
PHOTO: Chase Stevens/AP
Police and emergency responders gather at the intersection of Las Vegas Boulevard and Tropicana Avenue.
Photos: Mass shooting at Las Vegas music festival
Police and emergency responders gather at the intersection of Las Vegas Boulevard and Tropicana Avenue.
PHOTO: Ethan Miller/Getty Images
A police officer takes position behind a truck.
Photos: Mass shooting at Las Vegas music festival
A police officer takes position behind a truck.
PHOTO: John Locher/AP
A crowd takes cover at the festival grounds.
Photos: Mass shooting at Las Vegas music festival
A crowd takes cover at the festival grounds.
PHOTO: David Becker/Getty Images
Police officers advise people to take cover in the wake of the shooting.
Photos: Mass shooting at Las Vegas music festival
Police officers advise people to take cover in the wake of the shooting.
PHOTO: John Locher/AP
People tend to a victim at the festival grounds.
Photos: Mass shooting at Las Vegas music festival
People tend to a victim at the festival grounds.
PHOTO: David Becker/Getty Images
Police stand at the scene of the shooting.
Photos: Mass shooting at Las Vegas music festival
Police stand at the scene of the shooting.
PHOTO: John Locher/AP
A woman sits on a curb at the scene of the shooting.
Photos: Mass shooting at Las Vegas music festival
A woman sits on a curb at the scene of the shooting.
PHOTO: John Locher/AP
Police are deployed to the scene.
Photos: Mass shooting at Las Vegas music festival
Police are deployed to the scene.
PHOTO: John Locher/AP
A man makes a phone call as people run from the festival grounds.
Photos: Mass shooting at Las Vegas music festival
A man makes a phone call as people run from the festival grounds.
PHOTO: David Becker/Getty Images

Report sheds light on how he planned attack

• Paddock behaved strangely during a stay at the Mandalay Bay a month before the shooting. Paddock had specifically requested rooms that overlooked the Las Vegas Village. Danley, his girlfriend, told investigators that during their visit she “observed Paddock constantly looking out the windows of the room that overlooked the venue. Paddock would move from window to window looking at the site from different angles.” Authorities said they don’t anticipate charges being brought against Danley, who has cooperated with investigators.

• Google search history shows Paddock researched other large-scale venues. This isn’t necessarily new – it was previously reported he booked hotel rooms overlooking Lollapalooza in Chicago. But the report reflects inquiries dating back to May 18, 2017. At that time, Paddock was mostly looking into venues in Boston.

The view of Las Vegas Village from Stephen Paddock
The view of Las Vegas Village from Stephen Paddock's hotel room.
PHOTO: LVMPD

• Paddock googled “How tall is Mandalay Bay.” Readers might remember that no suicide note or manifesto was found in Paddock’s hotel room. The only piece of paper in the suite contained calculations the gunman made to determine how far his bullets would drop based on the height of his room, and the distance between himself and the venue. Paddock may have used the height of the hotel to calculate the trajectory.

CNN’s Carma Hassan, Jason Kravarik and Scott Glover contributed to this report.