PESHAWAR (APP) - Three extremists and a member of the Amn Lashkar were killed as clashes broke out in Bara tehsil of Khyber Agency, sources said. The clash occurred in Aka Khel area of Bara tehsil when the extremists challenged the members of the peace Lashkar triggering a bloody clash. The security forces have launched combing operation against the militants in Bara tehsil and killed scores of the militants and arrested many of them.