LAS VEGAS (AP) — FBI agents knew the gunman behind the deadliest mass shooting in modern U.S. history left behind big caches of guns, ammunition and explosives when they sought warrants to search his properties and online accounts, according to court documents released Friday. However, new questions were raised after a U.S. judge in Nevada unsealed the documents revealing some of what federal agents had learned about shooter Stephen Paddock in the week after the Las Vegas attack. The 315 pages of FBI affidavits provide just a glimpse of what investigators found during initial searches of Paddock's car and home after police found him dead late Oct. 1 in a hotel room at the Mandalay Bay resort.