Islamabad, Safar 16, 1437, November 28, 2015, SPA --Two men belonging to the tribal security force in Mohmand tribal district, northwest Pakistan, were killed in an explosion today, dpa reported. Pakistani security sources said that the explosion was caused by a landmine planted by unidentified gunmen on a road in Mohmand district, whereas the planted mine exploded as a patrol of the tribal security force, affiliated to the government, was passing, killing two. The sources added that the security forces cordoned off the site to collect evidence, and launched a search campaign to detect suspected members who might be linked to the blast. -- SPA 15:23 LOCAL TIME 12:23 GMT www.spa.gov.sa/w