Attackers detonated a bomb near a U.S. military patrol in Mosul on Saturday but missed the patrol and hit a school bus, killing one teenage student and wounding six others, the U.S. military said. The bomb exploded as the patrol was travelling through an eastern district of the city, closely followed by a minibus carrying students to a nearby high school. "The blast hit an Iraqi school bus killing one and injuring six, all eighth graders," the military said in a statement. No U.S. soldiers were wounded in the attack, but one of the assailants was killed, the statement said. Mosul has experienced a surge in violence over the past six weeks. On Friday, a car carrying Turkish security guards was attacked in the city, in Iraq's far north near the Turkish border, and four people were killed, one of them beheaded.