Suspected tribal rebels on Saturday again attacked the Pirkoh gas fieldÂ’s water supply, blasted a main power line and fired rockets at a cantonment area in Balochistan. Dera Bugti District Coordination Officer Abdul Samad Lasi said that militants blew up a water pipeline to the Pirkoh gas plant with explosives. The same pipeline had been attacked twice in the last 15 days and had only been repaired on Friday. Armed men also attacked a pumping station of the Pirkoh gas plant. A 132 KV electricity tower between Barkhan and Rakhni was blown up, disconnecting Barkhan and Kohlu districts from power. Railway police defused a six-pound bomb from rail track near a bridge just before the Balochistan Express was due to pass by. The train was scheduled to pass the area at about 9:50am but was late. Two rockets were fired in the cantonment area in Quetta in front of Askary Park on Saturday night, but there were no casualties, SSP Ghulam Muhammad Dogar said. One rocket hit the residence of a military officer and another fell nearby. A Marri Itehad spokesman said that security forces had shelled the Karmo Wadh area of Kohlu district and helicopters were seen in the area. He said that Marri tribe leader Asghar Marri had been arrested in Dera Bugti.