This post has been updated throughout.
On Sunday night, a gunman opened fire over a crowd of thousands at a country music festival in Las Vegas, raining bullets down from the 32nd floor of a nearby hotel.
The gunman died before law enforcement entered his hotel room from what police believe was a self-inflicted gunshot wound. Authorities believe the suspect, identified as Stephen Paddock, acted alone in the shooting.
Here’s everything we know so far about what is now the deadliest mass shooting in United States history, leaving at least 58 people dead and more than 500 others injured.
The gunman fired on a country music festival from a room in the Mandalay Bay hotel
The suspected gunman was perched on the 32nd floor of the Mandalay Bay Hotel and Casino. Shortly after 10 p.m. PT on Sunday, he opened fire on the 22,000 people attending the Route 91 Harvest Festival in Las Vegas.
The gunman had reserved two hotel rooms, one facing east and the other north, Clark County Commission Chair Steve Sisolak told the Nevada Independent. The gunman used a device similar to a hammer to break the windows from which he fired onto the crowd, police said.
Country singer Jason Aldean was performing at the time. Aldean ran off the stage after several rounds of gunfire rung out, video of the concert shows.
— Evan Schreiber (@SchreiberEvan) October 2, 2017
Police officers at the concert were able to roughly identify where the shots were coming from. Law enforcement then entered the Mandalay Bay Hotel, moving up toward the 32nd floor, Las Vegas Police Undersheriff Kevin McMahill told CNN.
The LVMPD SWAT team breached the hotel room where the suspect was holed up and found him dead there, per the police department. Clark County Sheriff Joseph Lombardo said that police believe the gunman killed himself before the SWAT team entered the room.
Members of the SWAT team did discharge their weapons at the location of the gunman’s hotel room, but it’s not yet clear if they fired their weapons before or after the gunman died, Lombardo said.
— NBC Nightly News (@NBCNightlyNews) October 2, 2017
At least 58 people died and more than 500 were injured
At least 58 people died in the shooting and at least 515 people have been transported to area hospitals with injuries, police said.
As of Monday morning, police had declined to identify any of the victims.
Las Vegas police did confirm that an off-duty police officer was among those killed. Two on-duty Las Vegas police officers also were injured in the shooting, the department said. One sustained minor injuries while the other now is in stable condition after surgery.
Police ID’d the gunman as Stephen Paddock, 64
Police identified the suspected gunman as Stephen Paddock, a 64-year-old white man who was living in Mesquite, Nevada.
Lombardo told reporters that police had yet to find any “derogatory” background information on Paddock. Lombardo noted that Paddock had a citation several years ago that was resolved in court, but he did not describe that citation. Mesquite police officer Quinn Averett told reporters Monday morning that the Mesquite police had not had any recorded interactions with Paddock.
Paddock checked into the Mandalay Bay hotel on Sept. 28, Lombardo said. Hotel staff entered the room between the time when he checked in and the time of the shooting, but police have not yet learned that hotel staff noticed anything “nefarious,” Lombardo said.
Police searched for Marilou Danley, believed to be Paddock’s roommate, and initially identified her as a person of interest in the case. Lombardo told reporters Monday morning that authorities found Danley abroad, and believe at this time that she was not involved in the incident. Lombardo said that Danley was not with the suspect when he checked into the hotel, although the suspect had been using her ID. Lombardo didn’t specify why the suspect used Danley’s ID. Clark County Commission Chair Steve Sisolak later told the Nevada Independent that Paddock was using Danley’s slot machine card, which is how police identified her as a person of interest.
Paddock had more than 10 rifles
The suspected gunman had more than 10 rifles in his hotel room, Lombardo told reporters in a press conference. McMahill had previously told CNN that the gunman had several long rifles in the room.
While several rounds of automatic gun fire can be heard in videos of the shooting, police have yet to identify the weapons used by the gunman.
Lombardo said that it appears the gunman brought the firearms to the hotel himself.
Police are searching Paddock’s home—and searching for a motive
As of about 11:30 a.m. ET, law enforcement had completed their search of Paddock’s home in Mesquite but had not yet evaluated any evidence recovered from the residence. Lombardo told reporters that he was not aware of any new “derogatory” information that law enforcement has discovered about the suspect.
Authorities also discovered another residence belonging to the suspect in northern Nevada, and they will execute a search warrant there, Lombardo said.
Lombardo said that law enforcement had not yet identified a motive for the mass shooting. Police have not labeled the incident as terrorism, either.
The FBI has determined that the gunman had no connection to an international terror group. This came after the Islamic State claimed responsibility for the shooting but did not provide any evidence to support that claim.
Asked at a press conference whether he had thought the incident was linked to the Islamic State, Lombardo replied, “No, ma’am. I can’t get into the mind of a psychopath at this time.”
Mesquite police officer Quinn Averett updated reporters on the search through Paddock’s home, located in a retirement community, later Monday morning. Averett said that police found guns and possibly ammunition in the residence, but otherwise found “nothing out of the ordinary.”
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