Marilou Danley, 62, landed at Los Angeles International Airport on a flight from the Philippines and was escorted by FBI agents, multiple law enforcement sources familiar with the investigation confirmed to NBC News.
Danley's sisters in Australia said that they believe she was unaware of Paddock's murderous plans and that he sent her away so she wouldn't interfere.
"It happened a lot", Starbucks Supervisor Esperanza Mendoza told the Times.
Reports said that Danley and Paddock had been sharing the same address since January 2017, as they were roommates in Mesquite, Nevada.
"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.
Lombardo said his department has spoken with Danley.
Less than twelve hours after he allegedly fired a fusillade of bullets onto an outdoor country music festival from a Las Vegas hotel room, killing at least 58 people and injuring more than 500 others before turning a gun on himself, little has emerged about the man suspected of carrying out the deadliest mass shooting in US history.
While authorities have not announced the type of weapons of Paddock used Sunday night, Paddock had a total of 23 weapons with him in a Mandalay Bay hotel room.
"We didn't know him", Eric Paddock said.
Investigators are still trying to trace the 100,000 USA dollars (£75,000) Paddock transferred to the Philippines in the days before the shooting, and are also looking into a least a dozen reports over the past several weeks that said he had gambled more than 10,000 dollars per day, a U.S. official said.
Speaking at a press conference, he said law enforcement authorities are in communication with Danley and anticipate "some information here from her shortly". Gomez said. "Did she see him operating these weapons, training, working on these weapons?"
He killed 59 people at a concert below and injured more than 500 others, in what has become the worst USA mass shooting in modern history.
The latest revelation came Tuesday afternoon when police said the gunman set up cameras inside his hotel suite and in the hallway.
The mangled remains of Paddock's garage door sat in his driveway, after authorities searched the home on Monday, uncovering a cache of 19 firearms, explosives and thousands of rounds of ammunition.
Danley was out of the country at the time of the shooting and has not been named a co-conspirator in the massacre.
Australian Foreign Minister Julie Bishop said her government was working with U.S. authorities but told CNN affiliate Sky News on Monday that Australia had had no contact with Danley directly. The couple separated in 1979 before their divorce was finalized in 1980 in Los Angeles County.
The 64-year-old, from Mesquite, Nevada, sprayed bullets on revellers enjoying the Route 91 Harvest Festival from the 32nd floor of the Mandalay Bay Hotel and Casino. She described Danley as a "wonderful" person who would never have been involved in such a plot.
"This is a horrific event, and our hearts and prayers go out to everyone impacted by this awful act", Waltrip said. Who is Stephen Paddock?