Forces from Somalia's northern Puntland region have attacked a cell of al-Shabab militants. Puntland President Abdirahman Sheik Mohamed said 13 Islamist fighters were killed in the raid after the militants attacked an army post near the commercial capital, Bosasso. Reports say the mountain raid was the first time Puntland's forces have clashed with al-Shabab. At least two members of Puntland's security forces were also killed in the clashes in the mountains near Galgala. Puntland is semi-autonomous from the rest of Somalia but is allied to the embattled, UN-backed government in Mogadishu. The Puntland authorities have recently rounded up and deported hundreds of young men in Bosasso and sent them to Mogadishu, accusing them of being al-Shabab sympathizers.