A U.S. military official says a group of militants has launched an attack against a government center in eastern Afghanistan. Capt. Elizabeth Mathias said militants attacked the governor's compound in the eastern city of Gardez with guns and other weapons on Tuesday. U.S. forces responded to the scene but it wasn't immediately clear if they were involved in the fight, The Associated Press reported. A Taliban spokesman, Zabiullah Mujahid, claimed in a phone call to The Associated Press that 15 militants in suicide vests launched the attack in Gardez. No Afghan officials immediately had any information.