According to a new report from the Department of the Interior Inspector General, the United States Park Police have lost track of thousands of handguns, shotguns, machine guns and rifles.

An anonymous complaint led the Office of Inspector General (OIG) to investigate the management and supervision of the U.S. Park Police (USPP) firearms program. Simultaneous, unannounced inspections of unassigned weapons at USPP facilities revealed that USPP could not account for Government-issued military-style rifles. It also showed that its weapons inventory was incomplete. Incomplete weapons inventories undermine USPP accountability for all of its weapons, and allow for the possibility that weapons that cannot be located and may not be in safe keeping.