Marxist rebels ambushed a police patrol on a key highway in western Colombia, detonating a roadside bomb and spraying the officers’ vehicle with gunfire in an attack that killed three officers and a civilian, police said. Another six officers were wounded in the ambush staged by the Revolutionary Armed Forces of Colombia near Coello, 50 miles west of the capital, said Gen. Alberto Ruíz, operations chief of the Colombian National Police. Full Story