ORAKZAI AGENCY/PESHAWAR - At least six militants were killed when the security forcers retaliated against an extremists attack on a checkpoint in the Dabori area of Orakzai Agency on Friday. Sources said that the clash erupted when militants stormed a checkpost, injuring security personnel. The troops retaliated against the attack and killed six attackers while two others sustained injuries. The forces targeted militant hideouts in Arhang, Gall Gandi Tall and Murghan area of the upper agency and seized a number of landmine devices, machineguns and other weapons.