A law enforcement official says she arrived on a flight from Manila to Los Angeles where Federal Bureau of Investigation agents were waiting for her late Tuesday night. Police don't know if the devices were transmitting - the FBI is investigating their use - but the Clark County sheriff said he thinks Paddock might have used them to watch for people approaching his room.
Immigration documents in the Philippines say that Danley first arrived there on September 15, departed on September 22 then returned three days later on a flight from Hong Kong. She was out of the country during the shooting and returned to the United States on Tuesday night from the Philippines. Paddock turned his attention to those outside his door and fired, wounding one of them.
"It was pre-planned, extensively, and I'm pretty sure that he evaluated everything that he did in his actions, which is troublesome", Joseph Lombardo, the sheriff of the Las Vegas Metropolitan Police Department, said.
Workers at Stephen Paddock's local Starbucks immediately remembered the tall man with a big beer belly and bags under his eyes who used to come in with his girlfriend, according to the Los Angeles Times.
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 some 22,000 attending a country music concert below.
"I anticipate he was looking for anybody coming to take him into custody", Lombardo said. Investigators found a computer and 23 guns in Paddock's hotel room.
Investigators have plenty of evidence but nothing yet that points to a motive in the shooting.
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The gun attachment that mimics automatic gunfire is a little-known device called a "bump stock" that is not widely sold.
Las Vegas Sheriff Joseph Lombardo on Tuesday confirmed that Danley was in the Philippines and said she is now considered "a person of interest".
"It just blew me away", said Rod Sweningson.
Other reports have said she left the country on Sept 25.
Investigators are also examining a $100,000 wire transfer that Paddock sent to an account in the Philippines that appeared to be intended for Danley, a senior U.S. homeland security official told Reuters on Tuesday. Authorities have not yet determined the exact date or goal of the wire transfer or who the recipient was.
Interviewed with her face blurred so she could remain anonymous, one of Danley's sisters told Australia's 7 News she believed Paddock had deliberately sent her away. He said he expected to release a statement Wednesday afternoon.
Twenty-three guns were found in Paddock's suite and a search of a Mesquite, Nevada, home the couple lived in found 19 firearms, explosives and thousands of rounds of ammunition.
Investigators also found explosives in his home and ammonium nitrate (used as a bomb ingredient) in his auto.