(KUNA) -- Three Iraqis were killed and eight others were injured on Thursday by a booby trapped car blast near a gas station on Baghdad. Iraqi police said the blast took place 100-meters away from the station that had scores of cars waiting in line to refuel. They noted that these casualties are only preliminary. Earlier, five cleaning workers were killed by a bomb while performing their regular tasks in south-eastern Baghdad's Al-Ghadeer quarter.