A gunman turned a Las Vegas concert into a killing field Sunday night, murdering at least 50 people and injuring more than 400 others in the deadliest mass shooting in modern United States history.

The suspect, who died of a self-inflicted gunshot wound, was identified as 64-year-old Stephen Paddock, a resident of Mesquite, Nevada. Police initially sought a woman believed to be Paddock's roommate, Marilou Danley, as a "person of interest." Detectives later made contact with her, and "do not believe she is involved with the shooting on The Strip."