LAS VEGAS - Photographs leaked from the hotel room of the Las Vegas shooter showed scope-mounted assault rifles, a floor covered with expended shells and what appears to be a note left on a table.
Las Vegas Sheriff Joseph Lombardo said that Stephen Paddock, the man who murdered 59 people from the 32nd floor of the Mandalay Bay Hotel, also had cameras in his room, including one apparently monitoring the corridor approach.
Lombardo said his department was investigating the photographs from inside and outside the room published by Boston 25 TV station and Germany's Bild magazine.
One showed the apparent body of the shooter next to two assault rifles mounted on bipods, his feet next to a table with an apparent hand-written note on it.
Other pictures from the scene show a neatly stacked pile of ammunition clips and other rifles piled up on lounge chairs.
A picture outside the room shows bullet holes through the door, possibly those made when Paddock fired at hotel security guards outside the door, hitting one in the leg.
Lombardo said Paddock shot from the hotel window down at the crowd of about 22,000 at a country music concert late on Sunday for about nine minutes in total.
Fifty-nine people have been confirmed dead and about 500 were treated in hospitals for a range of wounds and injuries.
Lombardo said it was not yet clear what motivated Paddock, a 64-year-old regular gambler who owned numerous properties and had no known associations with political, radical or hate groups.
He transferred $100,000 (R1.36-million) to his girlfriend in the Philippines, authorities in Manila said on Wednesday, citing the Federal Bureau of Investigation.
The girlfriend of Las Vegas shooter Stephen Paddock has flown out of Manila for the United States, the Philippine immigration bureau spokeswoman said on Wednesday.
Marilou Danley departed on a Philippine Airlines flight for Los Angeles on Tuesday night, spokeswoman Maria Antoinette Mangrobang told reporters.
Lombardo said Paddock had used a "bump stock" on at least one of the weapons, which in effect turned it into an automatic rifle that could shoot hundreds of rounds a minute.
Outside the room investigators found one of the cameras mounted on a room service cart in the hallway, possibly giving Paddock a view of anyone approaching the room.
"I'm not aware of any transmission. But there were cameras," Lombardo said.