On Monday evening, ABC News reported that a modified bump stock was recovered from the scene, and that authorities were still examining the weapons to see if any were capable of fully automatic fire. Military-style automatic rifles and machine guns are able to fire multiple rounds per trigger pull. (Las Vegas police have not yet released details of the firearms involved.) Semi-automatic guns shoot only one round for every pull of the trigger. Las Vegas Police said Paddock was found dead when a SWAT team entered his hotel room, where investigators also reportedly found up to 20 firearms. The suspect, 64-year-old Stephen Paddock, allegedly shot and killed 58 people in what has become the deadliest mass shooting in American history-firing at a rate that set this incident apart from other recent shootings. On Sunday night, authorities said a gunman opened fire on a crowd of music-festival attendees from a room on the 32nd floor of the Mandalay Bay Resort and Casino in Las Vegas. This story was updated on Monday, October 2 at 11:22 pm
