QUETTA, Jan 17: Two powerful bombs exploded in Hub and Mastung, while rockets were fired at two security checkposts in the Karmo-Wadh area of Kahan tehsil and the Pat Feeder area of Nasirabad district on Wednesday.

Police foiled an attempt to blow up a pylon of power transmission line by defusing two bombs in the Mastung area.

According to officials, a bomb was planted beneath a 12-inch diameter pipeline supplying gas to the Hub area that exploded in the Public Health Engineering Colony near the Lasbela Canal area. The pipeline was damaged but gas supply was not interrupted.

Another bomb exploded in an isolated place in the Mastung town late night. No serious damage or casualty was reported.

Police defused two powerful bombs planted under a pylon of transmission line in a village, some 10km off Mastung on the RCD Highway.

Meanwhile, militants fired eight rockets at a checkpost of the Frontier Corps in the Karmo-Wadh area of Kahan tehsil. But they exploded in an open area.

The militants also attacked a checkpost in the Pat Feeder area of Nasirabad district. "At least eight rockets were fired but none of them hit the target," police said.