(KUNA) -- Unknown gunmen Wednesday shot dead principal of a cadet college in Southwestern Baluchistan province, said an official. Mian Maqbool Ahmed was gunned down near his residence in Mastung district, 50 kilometers southwest of Quetta, the provincial capital, District Police Officer (DPO) Hamid Shaukat told KUNA. He said it was not immediately clear who carried out the attack but authorities suspected nationalist militants hand behind the killing.