ORAKZAI AGENCY - At least six militants along with a key commander were killed while two others sustained injuries in a clashes with security forces in Upper Orakzai here on Sunday.According to details, the security forces were on their routine patrolling when suddenly militants attacked them from two sides at Dabori area, some 68 km in the north of Gheljo, the headquarters of Upper Orakzai Agency. The forces, however, retaliated with full forces with the help of artillery. During the clash, at least sis militants including a key commander were killed while two others sustained injures.The forces alter cordoned off the area and launched a search operation. The forces also conducted a search operation in Zakhtun, Arhang, and Gall area and recovered a huge cache of arms, ammunition and explosives.  Meanwhile, the security forces have made further advancement Jamal Mela area of Kurram Agency and strengthened their position in the area.The sources said that the forces have strengthened their hold of the area after taking control of Jamal Mela.