Guantánamo detainee 'left alone with gun'

American agents and an MI5 officer left a UK resident alone with a gun in an interrogation room after beating and questioning him, according to testimony provided to his lawyers. The extraordinary claim, made by a Guantánamo Bay detainee, Shaker Aamer, will raise further questions about Britain's knowledge of illegal interrogation techniques employed by CIA agents as they questioned Taliban and al-Qaida suspects during the "war on terror". Last month an internal CIA report revealed that the agency's interrogators told one suspect that his children would be killed. It also outlined how interrogators took a power drill and handgun into an interrogation room and staged a mock execution in a cell next door. Aamer's claims are contained in testimony provided to Zachary Katznelson, a lawyer with the legal rights group Reprieve, which has campaigned for Aamer's release from Guantánamo Bay, where he is the subject of an extradition request from the British government.