At least five militants were killed in a clash with security forces when they attacked a check post here on Tuesday morning. According to security sources, militants fired two missiles on a FC check post located in Dhand area, tehsil Tal of Hangu partially damaging it. The FC troops retaliated the attack with full force killing five extremists and forcing others to flee. Later search operation was also launched in the area to nab the fleeing militants but no arrest could be made.