Senior Inspector Vicente Raval said two grenades exploded after a heated argument and a shooting that wounded one person in Sitio Acacia, Barangay Recodo, about 15 kilometers from this city.
Friends of the wounded man retaliated, lobbing grenades near the store and instantly killing a 15-year-old boy, he said. Two other males, aged 16 and 22, died in a hospital. Roel Pareño, Jaime Laude and AP