Baghdad, June 30: Several Iraqis were killed in an explosion at an ammunition dump over the weekend in Haditha, northwest of Baghdad, a US military official said today. "There was an explosion and then a fire at an ammunition dump in the town of Haditha, 260 kilometers northwest of Baghdad,” the official said. "There were several casualties," he said, without elaborating. A US soldier, meanwhile, said that the casualties were all Iraqis. "There are no US casualties," he said. Bureau Report