Baghdad, Iraq - Rebels attacked US forces at the notorious Abu Ghraib Prison for the second time in 48 hours. An armoured vehicle was damaged by a car bomb and several Iraqi police officers were injured in the attack which was much smaller scale than Saturday's assault which wounded 44 soldiers. On Friday inmates became "unruly" when a number of them were transfered. Prisoners burned tents and hurled stones at guards. Four guards and 12 detainees were injured in the disturbance. Another protest the same day at the US-run detention Camp Bucca began when an inmate was allegedly denied medical treatment. The International Committee of the Red Cross who were present at the facility during the disturbance has demanded an inquiry into the cause. The US has officially denied that any incident occurred.