Stephen Paddock: What we know about the Las Vegas shooter

LAS VEGAS (AP/CBS) — The man who killed at least 58 people and injured more than 500 at a Las Vegas concert was a retiree with no criminal history in the Nevada county where he lived, police said Monday.The brother of Stephen Paddock, 64, said he's "completely dumbfounded" by the shooting at a country music concert Sunday night, the deadliest in modern U.S. history. Eric Paddock told the Orlando Sentinel newspaper that he can't understand what happened.The Islamic State group claimed respo