After being flown to Afghanistan and held for two weeks, he was transferred to military custody and the Guantánamo Bay detention camp in Cuba on August 4, 2002, under the authority of the 2001 Authorization for Use of Military Force (AUMF).[7] Slahi was subjected to sleep deprivation, isolation, temperature extremes, beatings and sexual humiliation at Guantánamo. In one documented incident, he was blindfolded and taken out to sea in a boat for a mock execution. Lt. Col Stuart Couch refused to prosecute Slahi in a Military Commission in 2003. He said that "Salahi's incriminating statements—the core of the government's case—had been taken through torture, rendering them inadmissible under U.S. and international law."