A car bomb killed two American soldiers and wounded eight when it exploded in Baghdad on Saturday, the U.S. military said in a statement. The military said the soldiers were on their way to the site of a previous car bomb explosion when they were attacked. Three U.S. vehicles were destroyed in the blast. The U.S. military did not give the location of the attack. But it earlier said that three soldiers were wounded in a suspected suicide car bomb attack on the road to Baghdad airport. Residents living near the airport road said there had been at least two loud explosions in the area on Saturday afternoon, shattering windows and sending thick black smoke into the sky. A group led by al Qaeda ally Abu Musab al-Zarqawi said it was behind the attack on U.S. forces on the Baghdad airport road, according to an Internet statement. A purported statement from the military wing of the Tawhid and Jihad group said its "martyrdom brigade" carried out the attack. The statement, posted on a Web site often used by militants, could not be verified. At least 778 U.S. military and Pentagon personnel have been killed in action in Iraq since the start of the war last year. Including non-hostile deaths, the toll is 1,029.