Authorities seek to unravel why Stephen Paddock unleashed mass murder in Las Vegas

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

NEW YORK — Stephen Paddock has been identified as the gunman who killed at least 58 people and injured 515 others at a Las Vegas concert on Sunday.

Paddock, 64, is believed to have killed himself after opening fire from the 32nd floor of the Mandalay Bay Hotel and Casino, across the street from the concert.

Las Vegas Metropolitan Police Sheriff Joseph Lombardo said SWAT teams found at least 10 rifles in Paddock’s hotel room at Mandalay Bay.

"We have to establish what his motivation is first," Lombardo said. "We have information he was in there [the room] since the 28th of September."

Here’s what we know about Stephen Paddock, who was living in a retiree community—Mesquite, Nevada—about 80 miles northeast of Las Vegas.

Paddock’s roommate in Mesquite was Marilou Danley, who was located Monday by U.S. authorities, overseas in the Philippines.

Las Vegas police and the FBI don’t believe Danley had anything to do with the Las Vegas massacre. Paddock is known to have a court citation on his record, Lombardo said.

Danley, 62, is listed as a homeowner living with Paddock in a residence on Babbling Brook Court in Mesquite, which features several golf courses and casinos for retirees to enjoy.

Cops in Paddock’s Nevada community said: “We in the Mesquite Police Department have not had any contact with these people in the past.  We haven’t had any traffic stops, any law enforcement contact, no arrests or nothing.” Lombardo said earlier that Paddock is known to have a court citation on his record.

CNN reported that Paddock had a private pilot’s license.

We’re still trying to find out what kind of weapons training Paddock had.

A YouTube video posted by someone called Goldcup Shooter on June 7, 2009 had the tag line “Steve running both courses of fire.”

It suggests the man who’s shooting is someone named Steve Paddock.

It shows the back of a man firing a semi-automatic weapon in a gun range, moving from target to target.

You don’t see his face.  He’s with an instructor.

When PIX11 searched for Goldcup Shooter and found a gun club with that name based in Manila, the Philippines.

We will investigate whether Paddock ever traveled to the Philippines, which is where his companion, Danley, was located Monday.

Paddock’s brother, Eric, lives in Orlando, Florida, and told news reporters Monday: “He was my brother; it’s like an asteroid fell out of the sky.”

Eric Paddock said his brother had a couple of handguns, adding : “He might have had one long rifle but he had no automatic weapons. It just makes no sense.”

Eric Paddock said his brother last communicated with him by text, after Hurricane Irma ravaged parts of Florida, “to ask how my mom was after [we] didn’t have power for five days.”

The brother said that Stephen Paddock had called his 90-year-old mom about a week or two ago, telling reporters,  “He sent her a walker; she was having trouble walking.”

Las Vegas investigators and Mesquite police had finished a search Monday of Stephen Paddock’s residence in Mesquite, finding additional guns.

They also located another property in northern Nevada they wanted to check out.

Las Vegas Metro Police Department sheriff, Joe Lombardo, added some more details about Paddock’s stay at the Mandalay Bay, at Monday’s press briefing just before noon.

“We believe he had a device similar to a hammer to smash the windows,” Lombardo said of the glass that was broken in Paddock’s hotel room on the 32nd floor.

“This is an individual described as a lone wolf.”

Lombardo added that Paddock brought the 10 rifles into the hotel room on his own and, even though workers were in and out of the room over the last several days, “Nothing nefarious was noticed.”

PIX11 received scanner audio that revealed the seconds before a SWAT team burst into Paddock’s hotel room; Sheriff Lombardo noted, “He had killed himself."

Stephen Paddock, identified by law enforcement as the gunman who opened fire on a concert near the Las Vegas strip on Oct. 1, 2017. (WKMG, Eric Paddock)

It looks like Paddock checked in about the time the three-day Route 91 Harvest Music Festival was starting. Gunfire began as Jason Aldean was performing the final song of the concert.

Many in the audience initially thought fireworks were being set off, but as the mortally wounded dropped to the ground, it became clear this was rapid gunfire coming from a high location.

An off-duty Las Vegas police officer who was attending the festival is among the dead in what is now the deadliest mass shooting in modern U.S. history.

Lombardo asked anyone with information about Paddock or the events leading up to the shooting to contact 1-800-CALL-FBI.