At least five people were killed when Shiite militiamen ambushed an Iraqi army patrol on Tuesday in the central city of Diwaniyah, as United States President Bush reaffirmed US support for Iraq following Monday’s suicide bombing.Two women were among the dead and another 14 people were wounded in Diwaniyah, according to a security official. The fighting began when gunmen opened fire on the patrol in the northern part of the predominantly Shiite city, setting a Humvee alight. Explosions and gunfire spread across neighbouring areas. “Two police cars have been burned and ambulances cannot reach the area,” a police official said shortly after the fighting began. He later added that five houses and 15 civilian vehicles had been destroyed. After a few hours the fighting calmed down and ambulances were allowed in to evacuate the wounded.