Security forces on Saturday killed four militants who attacked a security check post in North WaziristanÂ’s Ghulam Khan sector, reported Geo news. The militants attacked the check post at 8:30pm. Security forces retaliated and killed four insurgents. The rest fled, taking the bodies of their accomplices with them. Major General Waheed Arshad, director general Inter Services Public Relations (ISPR), confirmed the loss sustained by the militants. Attacks on security forces have increased after the Lal Masjid operation in which 103 people, including special forces personnel, were killed.