BAGHDAD - The U.S. military says it has killed four suspects, captured five others and destroyed two safehouses belonging to militants in northern Iraq. A statement from the military says American soldiers called in airstrikes and killed the four men Saturday after coming under small-arms fire southwest of Mosul. They also destroyed two buildings filled with weapons, ammunition and graffiti indicating they were used for foreign militants.It also says five men were captured in a separate raid in Mosul. Two of them are accused of conspiring with senior al-Qaida in Iraq leaders in the city.