A Nevada home the Las Vegas shooter used as a stash house for handguns, shotguns and a “plethora of ammunition” was burglarized last weekend in a stunning security breach, and comes as federal and state authorities say they’re still sweeping the scene for clues.

At least one vandal broke in to Stephen Paddock’s Reno-area home through the building’s front door, though detectives still were unsure if multiple suspects were involved, Officer Tim Broadway of the Reno Police Department told the Reno Gazette-Journal Tuesday.

Broadway said police were not immediately aware of anything taken or any damage done to the retirement community home. The FBI was notified of the breach.

Federal and local authorities stormed the home on Oct. 3, two days after Paddock killed 58 people, firing down on a concert crowd from his hotel suite in Las Vegas’ Mandalay Bay Resort and Casino. Officials found five handguns, two shotguns, several electronic devices and a “plethora of ammunition” at the home, Las Vegas Sheriff Joseph Lombardo said.