Sheriff Lombardo said he is "absolutely" confident investigators will establish why the big-spending gambler carried out the attack - the deadliest mass shooting in modern U.S. history.
It is unknown where Paddock obtained the majority of his weapons. Donald Judy, who was Paddock's neighbor in Florida from 2013 to 2015, said Paddock told him that he was doing real estate speculation in Southeast Asia.
He had been staying in the hotel since September 28, meticulously planning the grotesque murders.
The former accountant would've had a clear view of the Route 91 Harvest festival, a three-day country music event taking place in an open-air, ground-level venue across the Strip, some 400 yards away from his hotel.
Two cameras in the hallway and one in the peephole allowed him to see if "law enforcement or security" were approaching, police said.
A note was found in Paddock's Mandalay Bay hotel room, but it was not a suicide note, the sheriff said. "So they definitely want to hear from her what was going on in his life".
They haven't said whether the money was for Danley or her family or for another purposes, but Lombard quoted Danley as saying Paddock did wire an unspecified payment to her "for me and my family to buy a house". "It's like I just said, an asteroid fell out of the sky".
As the first shots rang out Sunday, first responders realized that the gunfire was raining down on the crowd from a vantage point up high.
Nevada Sheriff Joe Lombardo said there had been no reason prior to the shooting to alert the authorities to Paddock.
Stephen Paddock wired $100,000 to the Philippines days before the shooting, a US official who was not authorized to speak publicly because of the continuing investigation said on condition of anonymity.
They say Paddock wired $100,000 to a bank in the Philippines.
Investigators also learned Paddock accompanied Danley on a previous trip to her home country.
64-year-old Stephen Paddock, the main suspect in the one of the deadliest shooting incidents ever that took place in Las Vegas, killed himself after carrying out the firing.
Danley was filmed arriving at Los Angeles International Airport in a wheelchair.
"He would glare down at her and say - with a mean attitude - 'You don't need my casino card for this, '" Mendoza told the Times.
"This investigation is not ended with the demise of Mr. Paddock", Lombardo continued.
Adding more intrigue to the case is the news, confirmed to CNN by a USA law enforcement source, that Paddock recently wired $100,000 to the Philippines. "We stand together to help you carry your pain", Trump said.
A search of Paddock's home in a retirement community in Mesquite, Nevada, turned up 19 more guns, explosives and thousands of rounds of ammunition.
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Friends and family are asked to report missing people believed to be connected to the shooting using the hotline 1-800-536-9488. Lombardo's frank comments put into doubt an explanation previously put forward by authorities that he was a "lone wolf".
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The gunman opened fire on 22,000 people attending a music festival in Las Vegas from a room on the 32nd floor of a nearby hotel. Clemente said a "psychological autopsy" may be necessary to try to establish the motive.