LAS VEGAS (AP) — A gunman opened fire on an outdoor festival on the Las Vegas strip, killing at least 58 and leaving more than 500 others wounded in the deadliest mass shooting in U.S. history.

Authorities in Las Vegas say Stephen Paddock fired from the 32nd floor of the Mandalay Bay Hotel and Casino across the street from a country music concert Sunday night. They say SWAT teams with explosives then stormed his room and found he had killed himself.

Until now, the deadliest mass shooting happened last year at an Orlando, Florida, nightclub, where 49 were killed. Before that, the deadliest shooting in the U.S. was the 2007 attack at Virginia Tech, in which a student killed 32 people before killing himself.

Another one of the nation’s deadliest mass shootings since 2012 include the Feb. 25, 2016 shooting in Hesston. Cedric Ford, 38, killed three people and wounded 14 others at a lawnmower factory where he worked in the central Kansas community of Hesston. The local police chief killed him during a shootout with 200 to 300 workers still in the building.