A parked car bomb aimed at a U.S. patrol Thursday in Baghdad killed at least nine Iraqi civilians and wounded 26, AP quoted police as saying. American troops killed 17 militants amid escalating fighting in Sadr City, and another U.S. soldier was killed as the military death toll increased to a seven-month high of 50. The explosion occurred about 9:15 a.m. in a crowded commercial area in eastern Baghdad, police officials said, adding the nine killed included three women and a child. There was no information about any U.S. casualties. Health officials also said clashes in Sadr City killed eight people, including two women and a child, and wounded 18 others, including women and children.