At least 14 persons including four security officials and ten militants were killed in Pakistan's tribal area of North Waziristan Friday night, Pakistan Army said. The miscreant attacked a checkpoint of the security forces in Dosli area of North Waziristan, Pakistan military spokesman Maj-Gen Waheed Arshad said. Security forces retaliated and killed ten militants. Their colleagues took away the bodies of the dead miscreants. Arshad said four injured security officials were shifted to Combined Military Hospital in Bannu.