Las Vegas shooting gunman's motive remains a mystery

This Oct. 2017 photo released by the Las Vegas Metropolitan Police Department Force Investigation Team Report showing the interior of room 32-134 of Las Vegas shooter Stephen Paddock's 32nd floor room of the Mandalay Bay hotel, an evidence imaged 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. [Photo: Las Vegas Metropolitan Police Department via AP]