An official says an airstrike possibly of U.S. origin has caused explosions in southern Somalia. Buale town chairman Ibrahim Noleye says planes were heard flying followed by two loud explosions. Nearby villages reported explosions between Buale and the town of Sakow, but it is unclear if there were casualties. Noleye said Monday it was unclear who launched the airstrike Sunday night, but only U.S. aircraft have launched such strikes in Somalia in recent months. The Somali government has no air force, and Ethiopian troops based in the country have not been reported to have conducted airstrikes.