Two prisoners at Baghdad's notorious Abu Ghraib jail were killed Wednesday by prison wardens following fighting among inmates. The two men died after U.S. guards noticed prisoners beating up a fellow inmate and intervened. Five prisoners were injured, the U.S. military said in a statement. The military said it was unclear who was responsible for the death of the two men. Abu Ghraib made headlines earlier this year following photos and reports of U.S. guards sexually abusing inmates. -