BAGHDAD, December 06, SPA -- Police officials say gunmen killed fourIraqi policemen at a checkpoint west of Baghdad. The early Sunday attack is the latest in a string ofviolence in the Abu Ghraib area in recent months, the Associated Press reported. Police officials say the gunmen stormed the checkpoint at 7 a.m.,killing one policeman on duty and three others on a break. --SPA 12:48 LOCAL TIME 09:48 GMT www.spa.gov.sa/725275