Militants blew up a tower of a 66 KV transmission line here in Mohmand Agency on Saturday. According to political administration sources militants had planted explosives device with the transmission tower near Yakka Ghund area which went off with huge explosion early on Saturday morning. As a result of destruction power supply to Ghalanai and adjoining areas was suspended. Concerned authorities have initiated the repaired work on the destroyed power pylon but according to them it would take time to restore the supply as they were short of required equipment and manpower and due to security situation, they have to take greater care in the work. . Meanwhile, the security forces cordoned off the area after the incident and launched search operation to arrest the culprits.