Stephen Paddock, 64, rained bullets on attendees of a country music festival in Las Vegas from a nearby hotel on Sunday night (local time), killing 59 and injuring more than 500.
One rifle is also seen on the floor of the hotel room with a crime scene tag next to it.
Officials also found 12 bump fire stocks in the hotel room that simulate automatically fire, but don't alter the firearm to fire automatically, she said.
Sheriff Joseph Lombardo said officers searching the house in Mesquite, Nevada recovered "in excess of 18 additional firearms, some explosives and several thousand rounds of ammo, along with some electronic devices we're evaluating at this point".
Marilou Danley, the Filipina-Australian girlfriend of Las Vegas mass-murderer Stephen Paddock, is being interviewed by Federal Bureau of Investigation agents in Los Angeles.
Ms Danley is an Australian citizen and her sisters there said they believed she was "sent away" by Paddock to the Philippines a week before the shooting. "In that sense, I thank him for sparing my sister's life". He likely had a large suite or more than one room.
Whatever Paddock's motive, authorities said he planned the attack methodically, not only stockpiling almost two dozen guns in his hotel room but setting up cameras in the peephole and on a service cart outside his door, apparently to watch for police closing in on him.
A statement by Las Vegas police revealed that the suspected shooter who fired into the crowd from the 32nd floor of the Mandalay Bay hotel was later found dead in his hotel room. There was reason to believe that Paddock had a history of psychological problems, one official said.
Marilou Danley broke her silence on Thursday, a day after being flown from her holiday in the Philippines to Los Angeles for questioning.
Speaking at a press conference, he said law enforcement authorities are in communication with Danley and anticipate "some information here from her shortly".
John Cohen, a former Department of Homeland Security undersecretary who previously worked as a police officer, said that recordings of the shooting suggest that the shooter used an automatic weapon.
Ironically, the controversy helped the track move to the top of the iTunes chart in Australia this week. The criticism has been led by former prime minister, Tony Abbott, and Liberal senator, Eric Abetz.
Perhaps we'll see some changes to the budget later this year, or perhaps with the president's budget request early next year. Orbital ATK's Thompson said the USA should be able to put astronauts on the moon within five years through such vehicles.
Bale faces being ruled out for up to four weeks which makes him a doubt for potential World Cup playoffs next month. Wales are now in second place in Group D, four points behind leaders Serbia and one point above the Republic.
The app has its own personal assistant, and now every time you open it you're also hit in the face with all your friend's Stories. Messenger Lite would serve as an opportunity to find out whether or not one is inclined to the sticks-to-the-basics design.
Nakamura quickly got the upper hand on Mahal, but the Singhs jumped on him and allowed Mahal the opportunity to hit The Khallas. Question now is how will Shane McMahon react? It's expected that this match will serve as the main event of the show.
Well, now instead of having to strain your lovely operatic voice to cajole them into moving faster, you Google can help instead. It can sit in either vertical or horizontal orientation, and it comes in both "chalk" and 'charcoal'.
Jenks. "Today, we renew our commitment to educating our community, in an effort to break the cycle of violence". One by one their names were read, 50 victims of domestic violence in the Wabash Valley .
But All-Pro center Travis Frederick was called for holding Tanzel Smart , nullifying Prescott's game-tying dive into the end zone. Dallas DE DeMarcus Lawrence has taken the NFL by storm through the first three weeks, racking up a league-leading 6.5 sacks.
Srinagar: Attack in BSF camp, 3 terrorists killed
While one terrorist was killed by a BSF sentry at the gate, the other two entered the camp firing indiscriminately at the forces. Tuesday's attack was the latest in Kashmir which has seen a spurt in militancy, often blamed on Pakistan-based outfits by India.
Why did Stephen Paddock do it? Investigators don't yet know
Speaking about Paddock, Juertes said the man used to visit his mother occasionally but never interacted with the other residents. He had bought a $369,000 home in a retirement community with the proceeds of a real estate business worth around $2m.
Halo Mixed Reality Experience Coming Later This Month
It stands out because it has dual-OLED displays, each with a higher 1400 x 1400 resolution and 110-degree field-of-view. But most of all , we can't wait for you to take the Samsung HMD Odyssey out for a spin, and see it for yourself.