LAS VEGAS — At least 59 people were killed and 527 injured when a sniper opened fire at a Las Vegas concert on Sunday night. <br /> <br />Gunman Stephen Paddock, a 64-year old white male, from Mesquite, Nev., opened fire from the 32nd floor of the Mandalay Bay Hotel towards a country music festival, the Washington Post reported. <br />Authorities found dozens of guns in his hotel room and "in excess of" 19 firearms and bombs at his Nevada residence. <br /> <br />At 10:08 p.m., Paddock open fire straight down into the concert venue across the street, a quarter-mile away, according to the Washington Post. <br /> <br />Paddock was staying in a suite with two rooms, Las Vegas Sheriff Joseph Lombardo said. Authorities think he fired from both rooms to get better angles. <br /> <br />The shooting went on from between five to fifteen minutes, however estimates vary. <br /> <br />Authorities were able to locate the shooter because the smoke from his guns set the fire alarm off. <br /> <br />A SWAT team entered Paddock's room. Around that time, Paddock killed himself, Lombardo said.