Insurgents detonated three car bombs near a U.S. military convoy in Baghdad Thursday, killing 41 people, 34 of them children, and wounding scores. In two other attacks, a suicide bomber blew up his vehicle near a U.S. checkpoint outside the capital, killing two policemen and a U.S. soldier, and a car bomb killed four people in the restive northern Iraq town of Tal Afar. The Baghdad blasts coincided with crowds gathering to celebrate the opening of a new sewage plant. It was not clear if the event or a U.S. convoy passing nearby was the target. The first explosion was followed by two more that struck those who rushed to the aid of the initial victims. Ten U.S. soldiers were wounded in the attack, two of them seriously, the military said. Iraq’s Health ministry confirmed 41 dead and 139 wounded, the vast majority children. Group Profile