LAS VEGAS — As Las Vegas began the process of recovering from one of the deadliest mass shootings in United States history, one question hung heaviest over the city on Tuesday: Why?
The authorities have yet to provide a motive for Stephen Paddock, 64, who killed at least 59 people and injured more than 520 others on Sunday when he unleashed a rapid-fire hail of bullets on an outdoor music festival.
Armed with at least 23 firearms, Mr. Paddock, who the police have described as a “lone gunman,” stationed himself in a 32nd-floor luxury suite of the Mandalay Bay Resort and Casino and fired into a crowd of thousands of people. The police found Mr. Paddock dead in his room at the hotel.
As investigators sketched a portrait of Mr. Paddock, a wealthy gambler and amateur golfer, survivors have described the scene of carnage in vivid detail: Thousands of concertgoers screaming and running for cover as the gunman’s victims fell around them.
• President Trump on Tuesday called Mr. Paddock “a sick man, a demented man,” adding that “we are dealing with a very, very sick individual.”
• The federal authorities said there were no indications that Mr. Paddock had ties to any international terrorist organization, despite a claim of responsibility by the Islamic State.
• A registered nurse. A commercial fisherman. A school librarian. These are some of the victims.
Washington is divided on gun laws.
Mr. Trump said Tuesday that there would be some sort of discussion about gun legislation, but was not specific.
“We will be talking about gun laws as time goes by,” Mr. Trump said as he prepared to leave Washington for hurricane-battered Puerto Rico.
Democrats hoped the tragedy would spur congressional action on gun control. “What Congress can do — what Congress must do — is pass laws that keep our citizens safe,” Senator Chuck Schumer, Democrat of New York, said on the Senate floor on Monday.
But Republicans gave no indication that they would pursue gun safety legislation.
The president, who is scheduled to visit Las Vegas on Wednesday, also praised the speed of the police response there. “What happened is, in many ways, a miracle,” he said.
Audio reveals a frantic search for the gunman.
Recordings of police communications, captured by Broadcastify.com and some individuals, offer a moment-to-moment account of how officers responded to the first reports of gunfire. The police eventually pinpointed a suite in the Mandalay Bay hotel as the source of the shots, and they gathered in the stairwell just outside the gunman’s door. Explore how it unfolded with this timeline.
The police found an arsenal in the gunman’s hotel room.
At least 23 firearms, including a handgun, were found in Mr. Paddock’s hotel suite, according to the Las Vegas Metropolitan Police Department. Sheriff Joseph Lombardo of the Police Department said Mr. Paddock used multiple rifles during the attack.
A federal law enforcement official earlier said two rifles were outfitted with scopes and set up on tripods in front of two big windows. Another official said that among the weapons were AR-15-style assault rifles. Both officials spoke on the condition of anonymity because they were not authorized to divulge details of the investigation.
Sheriff Lombardo said that Mr. Paddock brought at least 10 suitcases into his hotel room over a period of time.
The sheriff said that Mr. Paddock fired through his hotel room door at security guards, striking one in the leg. The guard is still alive, he said. SWAT officers went in after the guard was shot.
In addition to the weapons at the hotel, the sheriff said the police retrieved 19 firearms, as well as explosives, several thousand rounds of ammunition and “electronic devices” from Mr. Paddock’s home in Mesquite, Nev.
Who was the gunman?
Mr. Paddock, 64, was described as a high-flying gambler who lived in a quiet retirement community and played golf. Officials said he had no significant criminal history and drew little attention to himself.
Investigators are trying to piece together his financial history to search for clues that could help determine what set him off.
Details about Mr. Paddock’s career and livelihood were sparse, aside from observations by neighbors and family members that he routinely gambled large amounts of money. “He was a wealthy guy, playing video poker, who went cruising all the time and lived in a hotel room,” a brother, Eric Paddock, said.
Mr. Paddock and his three brothers were raised by their mother, who told the children their father had died when in fact he was in prison, Eric Paddock said. Mr. Paddock’s father was convicted in 1961 of committing a series of bank robberies and was sentenced to 20 years in prison. He escaped from La Tuna federal prison in Texas in 1968 and became a used-car dealer and bingo parlor operator in Oregon.
The family moved around the country, from Iowa to Tucson to Southern California, another brother, Patrick Paddock II, said.
In an interview with CBS, Eric Paddock said that his brother Stephen was “not an avid gun guy at all.”
“The fact that he had those kind of weapons is just — where the hell did he get automatic weapons?” he asked.
‘I’ve never been that scared in my life,’ said one witness.
The police estimated that when the shooting began, there were 22,000 people at the Harvest Festival, listening to Jason Aldean, the final act of the three-day event.
Video of the shooting captured nine seconds of continuous, rapid fire, followed by 37 seconds of silence from the weapon and panicked screaming from the crowd. Gunfire then erupted again and again in extended bursts. Some concertgoers thought the noise was fireworks, but as it became clear what was happening, people fled, many of them unsure where the shots were coming from, or where they should go.
“Everyone was running, you could see people getting shot,” said Gail Davis, one of the witnesses. “I’ve never been that scared in my life,” she added. “To have this happen, I can’t wrap my mind around it.”
Video from the shooting showed Mr. Aldean running off the stage as the gunfire erupted.
Within minutes, a police officer on the scene radioed “to report cases of gunshot wounds “to the chest, legs, terminal arteries at the medical tent.”
A few minutes later, an officer said, “We’re making tourniquets out of blankets, but I’m running out of blankets here.”
Patients surged into Sunrise Hospital and Medical Center, within walking distance of the concert, where at least 124 “met the criteria for trauma activation, said Dr. Jeff Murawsky, the hospital’s chief medical officer. They included patients with single and multiple gunshot wounds to the head, face, chest, body, arms and, in one case, a finger.
Reporting was contributed by Ken Belson, Jennifer Medina and John Eligon from Las Vegas; Julie Turkewitz from Mesquite, Nev.; Eileen Sullivan from Washington; Richard Pérez-Peña from New York; Liam Stack from London; and Russell Goldman from Hong Kong.