Stephen Paddock: What we know about Las Vegas shooting suspect

Suspected shooter, Stephen Craig Paddock, a 64-year-old from Nevada, opened fired on thousands of concertgoers Sunday from his 32nd-floor hotel room at the Mandalay Bay Resort and Casino in what's now become the deadliest massacre in modern U.S. history.

Paddock fired on more than 22,000 people during a Route 91 Harvest Festival concert, leaving more than 50 dead. More than 500 others were wounded during the shooting and chaos that ensued as people ran from the festival held across the street from the hotel.

What we know about Paddock at this point

• Resident of a retirement community in Mesquite, Nevada (about 80 miles northeast of Las Vegas), the Daily Mail reported.
• Paddock appears to have had no social media presence, according to Las Vegas authorities.
• He appears to have been an apartment complex manager, Fox News reported.
• Paddock may have previously worked as an internal auditor at Lockheed Martin for some time, and managed an apartment building complex in Mesquite, Texas, according to ABC News.
• He checked into the Mandalay Bay on Sept. 28.
• A number of rifles and a large amount of ammunition were found in his hotel room, Clark County Sheriff Joe Lombardo said during a news conference Monday.
• Paddock appears to have worked as an accountant or auditor and was a licensed hunter and private pilot, ABC News reported.
• Paddock had both hunting and fishing licenses, according to public records, as well as his pilot's license, but no criminal record in the state of Nevada.
• Marilou Danley, 62, is the suspect's roommate. Detectives "do not believe she is involved with the shooting," Fox News reported.
• Paddock was carrying some of Danley's identification when he was found dead, according to Fox News.
• A SWAT team found Paddock dead from a self-inflicted gunshot wound, authorities said.

What was the motive?

At this point, the motive is unclear. Police have conducted an interview with Danley, but have not released information from that interview, except that it doesn't appear she was involved in the shooting.

Eric Paddock, the shooter's brother, told ABC News that the family was "dumbstruck" by the news.

“We have no idea how or why this happened,” Eric Paddock said. “As far as we know, Steve was perfectly fine.”

"He was just a guy," Eric Paddock told The Daily Mail. "Something happened, he snapped or something, he was just a guy."