Three suicide bombers driving chlorine-laden trucks struck in the Sunni insurgent stronghold of Anbar province, killing two policemen and forcing about 350 Iraqi civilians and six US troops to seek treatment for exposure to the gas, the military said today.

Multiple suicide bombings struck areas in the Sunni insurgent stronghold of Anbar province, and about 350 Iraqi civilians and six US troops had to be treated for exposure to chlorine gas, the military said today.