COTABATO CITY, Philippines—At least four people were killed when rival Moro groups clashed in Maguindanao as a result of a long-standing land dispute, military and civilian officials said Saturday. Mayor Benzar Ampatuan of Mamasapano, Maguindanao, said in a radio interview that fighters belonging to the Moro Islamic Liberation Front traded bullets with members of Umra Kato's breakaway Bangsamoro Islamic Freedom Fighters in Barangay Lower Libutan on Thursday. “They clashed and both sides suffered casualties,” Ampatuan said, adding that the incident also triggered evacuations. He said the clash was rooted in a long-standing land dispute. — Agencies