[JURIST] The terror suspect detention facility at the US naval base at Guantanamo Bay [JURIST news archive] marked its fourth anniversary [AP report] Wednesday, the same day military tribunals for suspected terrorists resumed [JURIST report] after a year-long hiatus. Separate proceedings were scheduled for Ali Hamza al Bahlul, a Yemeni citizen accused of working as a bodyguard for Osama bin Laden, and Canadian teenager Omar Khadr, who is accused of killing an Army medic in Afghanistan. Both could receive life sentences if convicted by the military commissions [JURIST news archive], authorized to try foreign terror suspects. Reuters has more. Also Wednesday, Amnesty International [advocacy website] reported that new claims of torture [press release] have emerged from detainees being held at the center. At least one detainee has alleged incidents of psychological and physical torture administered by US military personnel. AFP has more.