QUETTA, May 15: Three pylons of a 132kv double-circuit power transmission line were blown up in the Mainghundi area, some 25km off here, and at least 19 rockets were fired on checkposts in the Dear Bugti district early on Monday morning.

Power supply was suspended to various areas of the Mustang district and the Sariab grid station after the incident. However, the electricity supply to the areas was restored through alternative arrangements.

Meanwhile, a heavy exchange of fire between security forces and armed tribesmen was reported in the Sangsilla area of the Dera Bugti district.

Sources said the tribesmen fired at least 19 rockets on FC checkposts in Chashma, Loti, Pir Koh and Sangsilla areas of Dera Bugti.