Secondly, garage records show that during a period when Paddock's vehicle was left the hotel garage, one of his key cards was used to get into his room. One of Chicago's historic hotels on South Michigan Ave. sits directly across Grant Park where the music festival is held every early August.
"We have looked at everything, literally, to include the suspect's personal life, any political affiliation, his socia lbehaviours, economic situation, any potential radicalisation", McMahill told reporters.
After five days of scouring the life of Las Vegas gunman Stephen Paddock and chasing 1,000 leads, investigators confessed Friday they still don't know what drove him to mass murder, and they announced plans to put up billboards appealing for the public's help.
In the past year, Paddock - a retired real estate investor and former IRS agent - used his apparently extensive financial resources to fund his plans for the attack while also bankrolling his longtime passion for gambling. The other former official said Danley spoke about Paddock displaying "mental health symptoms." . But the Federal Bureau of Investigation has not yet determined a clear motive, according to the former agents.
In a statement, the Blackstone emphasized that no one by the name of Stephen Paddock actually stayed in the hotel during the Lollapalooza run.
So far, investigators have found no evidence supporting a claim by ISIS that Paddock had converted to Islam and carried out the attack on the terror group's behalf, according to the information provided by the source.
The wealthy real estate investor opened fire Sunday from his multistory perch onto the crowd below, killing 58 people and injuring nearly 400. Paddock killed himself before police entered his room.
The gunfire sent more than 22,000 country music fans attending the Route 91 Harvest Music Festival scrambling for their lives.
Also discovered were 23 firearms and thousands of rounds of ammunition in the shooter's hotel room.
But based on his activities leading up to the concert, authorities say Paddock may have been planning the shooting for months.
"I called her up immediately and she said, 'Relax, we shouldn't worry about it". Investigators have said the Las Vegas gunman had 12 such devices outfitted on the weapons he amassed to mount the recent attack. "We have a lot of work to do". "We don't have those sort of indicators".
Investigators are still trying to establish Paddock's motive.
Investigators have yet to determine why the high-stakes gambler carried out Sunday's rampage, the deadliest shooting in modern US history.
"A little more than two weeks ago, Stephen told me he found a cheap ticket for me to the Philippines and that he wanted me to take a trip home to see my family", she said. But she later feared it was a way to break up with her.