QUETTA, Jan 29: Armed militants blew up a gas pipeline in the Pir Koh area of Dera Bugti district on Monday night, disrupting the supply to the main distribution system in Sui. According to officials, saboteurs placed explosives beneath a gas pipeline in the Marro area of Pir Koh tehsil and blew up a big portion of the pipeline, resulting in suspension of supply to some areas of Sindh and Punjab from the main supplying system.