Marilou Danley has been met by federal agents following her return to the US.Law enforcement was hoping to obtain answers from Ms Danley, who Clark County Sheriff Joseph Lombardo said was a "person of interest" in the investigation. Since January of this year, Danley was listed on the home that she lived in with Paddock.
Marilou Danley flew out of Manila's global airport on Tuesday night for Los Angeles, immigration bureau spokeswoman Maria Antoinette Mangrobang said. One person who was injured in the shooting died Tuesday at Las Vegas' Sunrise Hospital and Medical Center, officials said.
The Las Vegas gunman's long-time girlfriend reassured her brother after the Sunday massacre, telling him to "relax" and assuring him that she would "fix" the situation, her brother told ABC News Wednesday.
Danley returned to the US overnight after three weeks overseas.
Paddock was said to have lived out the remainder of his life in Texas. There were no immediate details available about those trips, according to the official.
The sisters spoke on the condition of anonymity and had their faces blurred during the interview. The 62-year-old Filipino-born woman landed at Los Angeles International Airport at 7:17 p.m. PT on Philippine Air Flight 102.
The family of Geary Danley, the man who amateur, online detectives falsely labeled the Las Vegas shooter, made a statement Monday after they started getting death threats.
Officials say Paddock had been stockpiling guns since 1982 and bought 33 firearms in the previous year.
He took his own life before authorities found 23 weapons in his hotel room and another 19 at his home in Mesquite, Nevada.
While some of the reports centered around "suspicious activity", many were "currency transaction reports", which casinos are required to file with the Treasury Department when a person withdraws or deposits more than $10,000 in cash.
Snyder said authorities wouldn't get notified of the purchase of rifles, but would get notified of a multiple sale of two or more handguns in one purchase.
Air Force One carrying President Trump taxis on the runway past Mandalay Bay on Wednesday, October 4, 2017, in Las Vegas.
An FBI most-wanted poster said Paddock was "diagnosed as psychopathic" and "reportedly has suicidal tendencies and should be considered armed and unsafe". He knocked out two windows to create sniper's perches he used to rain torrents of bullets on the crowd of 22,000 some 500 yards away, authorities said. Some recovered from the hotel room she said, were equipped with a legal device known as a "bump stock", which increases a weapon's rate of fire.
Jordan Knights, an Australian nephew of Danley, said he was stunned by the massacre.
"We offer our deepest sympathies to the United States over this disturbing act of violence that took the lives of 50 people in Las Vegas last night", Foreign Affairs Secretary Alan Peter Cayetano said in a statement from NY where he is on an official visit.
"It just blew me away", said Rod Sweningson.
Reached by telephone, Paddock's lawyer at the time, Jared R. Richards, said he could not comment because of client confidentiality concerns.