LAS VEGAS: The girlfriend of Las Vegas shooter Stephen Paddock arrived back in the United States Tuesday evening and was met by FBI agents eager to hear whatever she might know about the motive behind his slaying of 58 people and wounding of more than 500 in the worst mass shooting in US history.
Although the FBI wants to talk to her, Marilou Danley, 62, is not in custody - she is classified as a "person of interest" to investigators - and is free to go wherever she wants, US media reported.
She was in the Philippines when Paddock opened fire with high-power rifles from a 32nd floor hotel room Sunday night at a sea of concertgoers below on the Las Vegas strip.
Details of victims from Las Vegas mass shooting emerge as grief spreads through US
Authorities are investigating reports that while she was in the Philippines, Paddock wired her $100,000.
Danley is an Australian citizen who moved to the United States 20 years ago to work on the casino strip, the Australian government confirmed Tuesday.
As America mourned, President Donald Trump prepared to visit the desert city Wednesday. He has branded Paddock a "demented man."
Beyond Trump's assessment, authorities were at a loss as to how a 64-year-old gambler and retired accountant had hauled a vast arsenal of weapons to the hotel and launched his assault.
Meanwhile, victims began to be identified in the media, each new story stirring emotions as America once again grappled with calls for reforms to its permissive firearm control laws.
Trump was not ready to suggest answers.
"What happened in Las Vegas is in many ways a miracle," he said. "The police department has done such an incredible job, and we'll be talking about gun laws as time goes by."
US officials have reacted cautiously to a claim by the Islamic State militant group that the shooter had carried out Sunday night's massacre on its behalf.
Experts cautioned that the group - under pressure in its Syrian and Iraqi heartlands - may be trying to rally its supporters with a false claim.
Stephen Paddock: Retired accountant, Las Vegas shooter
IS claimed Paddock was one of its "soldiers" but the FBI said it had found no such connection so far.
Authorities said Paddock, who had no criminal record, smashed windows in his hotel room shortly after 10pm on Sunday and rained fire on a crowd of 22,000 attending a country music concert below.
In footage of the massacre, the sustained rattle of gunfire is heard as people scream and bolt for cover with little idea of where the shots were coming from.
Sheriff Joseph Lombardo said Paddock fired through the door of his hotel room and hit a security guard in the leg.
But when a SWAT team stormed the room where Paddock had been staying since September 28, they found he had killed himself.
Authorities have seized 47 firearms from three locations, they said late Tuesday.
So far, investigators have found nothing to explain the actions of the gunman, but were continuing to hunt and trace every possible clue about a gunman they described as a "psychopath."
"For this individual to take it upon himself to create this chaos and harm is unspeakable," Lombardo told journalists Tuesday, saying the shooter's degree of preparation made it clear the attack was extensively premeditated.
Details started to emerge Tuesday about some of the victims - a kindergarten teacher from California who had married her childhood sweetheart, a Tennessee nurse, a high-school secretary from New Mexico.
Stories of heroism also surfaced. Bruce Ure, deputy police chief of the small Texas city of Seguin, was in the concert's VIP section when the gunfire broke out.
He sheltered from the bullets between two buses, then tended to three people who had been shot. Ure loaded the bleeding strangers into a passing car and rode with them to a hospital.
"They were all crying, and I was too," he told AFP. "They were saying that 'We're going to die, we're going to die,' and I still remember telling them: 'Not tonight, not tonight. Tonight's not your night. You're going to be ok.' Because I truly believed it."
While the White House has rebuffed calls to reopen the fraught US debate on gun control, Congress did shelve a controversial plan to make it easier to purchase gun silencers and make it more difficult to classify certain ammunition as "armor piercing."
According to his brother, Paddock was a high-stakes gambler and their bank-robber father was once on the FBI's 10 Most Wanted list.
But Eric Paddock said his brother had led an otherwise normal life.
"He liked to play video poker. He went on cruises. He sent his mother cookies," he said.
"We're lost," his brother said.
Paddock's neighbors in Mesquite were similarly dumbfounded to discover the killer lived in their midst.
"This is just a quiet, sleepy little community. It just blew me away," said Rod Sweningson.
"We've never even thought about locking our doors. We didn't know we lived two doors down from a lunatic."
Trump to visit Las Vegas
President Donald Trump will visit Las Vegas on Wednesday to try to soothe a city shaken by the deadliest shooting spree in modern US history in a trip that will test his ability to console a grieving nation.
His trip to Las Vegas will be the first time he has had to deal directly with the tragic aftermath of deadly gun violence that has routinely claimed hundreds of lives in recent years.
“It’s a very horrible thing even to think about,” Trump told reporters on Air Force One on Tuesday. “It’s really horrible."
“He’s a sick man, a demented man. A lot of problems, I guess. We are looking into him very, very seriously. But we’re dealing with a very, very sick individual,” Trump said of Paddock on Tuesday.
The Las Vegas attack is the deadliest shooting in recent US history, surpassing the toll of 49 dead in an attack on a Florida nightclub in June 2016.
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