Small sledge hammer. Las Vegas Metropolitan Police Department

This Oct. 2017 photo released by the Las Vegas Metropolitan Police Department Force Investigation Team Report showing a small sledge hammer, broken glass and bullet casings inside the interior of Las Vegas shooter Stephen Paddock’s 32nd floor room of the Mandalay Bay hotel in Las Vegas, , an image released as part of a preliminary report by Clark County Sheriff Joe Lombardo on Friday, Jan. 19, 2018, in Las Vegas. Paddock began shooting into the crowd attending the Route 91 Music Festival from his hotel room into a crowd of 22,000 people attending the Route 91 Harvest Festival music below on Oct. 1, 2017. (Las Vegas Metropolitan Police Department via AP)