The gunman who opened fire and killed at least 58 people was a 64-year-old Mesquite resident Stephen Paddock was in a 32nd-floor room of the Mandalay Bay, where he checked in on September 28 As officers entered his room, Paddock shot and killed himself, police said early Monday. Sheriff Joe Lombardo said officers found 10 rifles in the man’s room. Paddock’s brother, Eric, said, “It’s like an asteroid just fell on top of our family.”