 Operation Labrador was abandoned after the ZNG and the Croatian police captured the Yugoslav Air Force headquarters in Zagreb on 15 September 1991, during the Battle of the Barracks.The materials captured inside the facility included codes and computer disks related to Operation Labrador, as well as Sabolović's notes.Sabolović turned the materials over to his immediate superior at headquarters, Mirko Martić, but Martić failed to destroy them.