Kuwaiti police Saturday arrested two men wanted for allegedly being connected to a terror group planning to attack Americans and Kuwaiti security forces, an Interior Ministry official said. The men surrendered peacefully in a Kuwait City suburb, the official said on condition of anonymity. He would not identify them except to say they were Kuwaitis. Since Jan. 10, four policemen and eight suspected terrorists have been killed in clashes around the country. A group of Muslim extremists is suspected of planning to attack American civilians living in Kuwait and members of the U.S. military stationed here or on their way to Iraq. Kuwait's state security apparatus also was a target, authorities said. The alleged ringleader of the group, Amer al-Enezi, died of a heart attack while in custody, authorities said.