At least six militants were killed in clash with security forces in Malak Din Khel, Akakhel and Sipah areas of Khyber Agency, Dunya news reported on Saturday. <br />So far, 37 suspected terrorists have been killed and 20 others injured during ongoing ‘Operation Khyber 1’ in last three days. <br />Security forces also destroyed several militant hideouts in Nala, Sipah, Malak Din Khel and other areas of Khyber tribal region. <br />Reportedly, more than hundred families have moved to safer places. <br />According to the military sources, operation in Khyber Agency will continue until elimination of all terrorist hideouts from the area.