"I noticed a note on the nightstand near his shooting platform", said Las Vegas police officer Dave Newton.
Law enforcement said Paddock had no criminal background or ties to any global terrorist organizations.
"He was the only shooter; I'm very confident of that", McMahill said. A security fence stops people from getting in - but also prevents people from getting out. In the week since the shooting, Americans have been grappling with their grief and the uncertainty left by all the questions that remain unanswered. I want so bad to have answers for people.
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 attractive alternative music festival, Sheriff Joseph Lombardo said Tuesday. One of her sisters says she believes Paddock sent Danley away so she wouldn't interfere with his plans.
The official said investigators were interviewing other call girls for information and looking into at least a dozen cruises Paddock took in the last few years, including one to the Middle East.
McMahill said they also found approximately 50 pounds of tannerite and ammonium nitrate - materials that can be used to make explosive devices - in the gunman's auto, but it did not appear that Paddock had assembled the material into an improvised explosive device.
Paddock fired a barrage of gunfire from the windows of his 32nd-floor hotel suite into a crowd of 20,000 people attending an outdoor music festival on Sunday night, then killed himself before police stormed his room.
According to police, the mystery woman Paddock was with days before the shooting is a prostitute.
Paddock had 1,600 rounds of ammunition in his vehicle, along with fertilizer that can be used to make explosives and 50 pounds of Tannerite, a substance used in explosive rifle targets.
The team said the 64-year-old killer looked like an "average Joe" and told of their surprise to discover he was an "older gentleman". They are aware that ISIS has claimed responsibility, which to date they have no known nexus to.
"We're seeing multiple flashes in the middle of Mandalay Bay, on the north side", one officer says, over the radio.
A real estate investor who also made regular money on gambling, Paddock is said to have preferred video poker. He left no clear hint behind him which represent his motive for the mass shooting.
"Today, in our investigation, we don't have any of that uncovered", McMahill said. Attorney Richard A. Patterson, who represents Phippen's son Travis, stated that "I don't think we're at the bottom of (Paddock's assets)".