A staffer at the hotel said Paddock acted "abruptly" with them over some other issue, though it's not sure what that issue was.
Fifty-eight doves were released outside on the steps of City Hall.
"We've run a thousand leads", Undersheriff Kevin McMahill of the Las Vegas Metropolitan Police Department told reporters on Friday. "I can't believe that the person that I knew would even consider hurting somebody".
Paddock unleashed a barrage of bullets from the 32nd floor of the Mandalay Bay and Casino on Sunday night, killing at least 58 people and injuring about 500 others who were attending a country music festival below. The assault killed 58 people and injured more than 500 in the deadliest mass shooting in recent USA history.
Also, the weekend before the Las Vegas bloodbath, Paddock rented via Airbnb - and checked into - a condo in a 21-story luxury building in Las Vegas that overlooked the Life is lovely alternative music festival, Sheriff Joseph Lombardo said Tuesday.
In the 10 minutes before the gunman shoots himself, he kills 58 people and wounds 489 on the grounds below.
Deputy Clark County Fire Chief John Steinbeck said Sunday that items are being returned first to people who were in and in front of the VIP tent and bleacher seating east of the stage at the Route 91 Harvest festival.
This past weekend, more details were revealed about the 64-year-old high-stakes gambler who carried out the worst mass shooting in modern US history.
"We have looked at literally everything".
"We are looking at every aspect from birth to death of this suspect and this case". They are aware that ISIS has claimed responsibility, which to date they have no known nexus to. "And I don't know what happened to him", she said.
The FBI announced that billboards would go up around the city asking anyone in the USA with information to phone 800-CALL-FBI. Police say Paddock also set up surveillance cameras in the hallway outside of his hotel room.
Investigators are also looking into whether Paddock planned a vehicle bombing after the attack.
Investigators say they are examining electronic devices found in the hotel suite, as well as evidence uncovered in Paddock's Nevada homes.
Police radio calls to the team told them to watch out for booby traps, as they came across a room service cart with wires on it going underneath the door of the gunman's room.
Las Vegas Metro Police officer stands by at a staging area in the intersection of Tropicana Avenue and Las Vegas Boulevard South after a mass shooting at a music festival on the Las Vegas Strip Sunday, Oct. 1, 2017.
Danley, who returned to the USA late on Tuesday from a family visit to the Philippines, is regarded by investigators as a "person of interest". "We need to pop this and see if we get any type of response from this guy to see if he's in here or if he's actually moved somewhere else", an officer said.
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