Six foreign militants were killed and a house of Taliban chief demolished during ongoing operation Rah-e-Nijat in South Waziristan. Three militants were also killed in North Waziristan clash. The sources said security forces continuously pounding militants hideouts in Ladha, Makeen and adjoining areas. Six foreign militants were killed in Sarogha during last 24 hours as ground troops advancing towards key positions of militants. In some of the areas, militants offering stiff resistance to the security forces. The houses of militant commander Hakimullah Mahsud and his key lieutenant Qari Hussain were demolished in Kotkai area Meanwhile, militants fired mortar shells at FC camp in Razmak area of North Waziristan, however, no loss of life was reported. Three militants were killed in retaliatory action of forces.