A bomb damaged a section of a main Pakistan railway line Thursday, officials said. No injuries were reported, and no one has claimed responsibility. One explosion smashed a 0.6-meter (2-foot) section of track linking Quetta, capital of the southwestern province of Baluchistan, with the Iranian border town of Zahedan, said Shoaib Ahmed, controller of traffic for state-run Pakistan Railways. Two other small bombs in the same area on Thursday damaged two electricity pylons, but no one was injured and power supply was not disrupted, said Jibraeel Khan, a spokesman for the state utility Water and Power Development Authority. The damaged train track at Ahmedwal town, about 200 kilometers (125 miles) southeast of Quetta, has been repaired, Ahmed said. A search for more bombs would delay a train's scheduled arrival in Quetta on Friday, he said. No one claimed responsibility for the attacks, the latest in a series of small-scale bombings and rocket attacks in Baluchistan in recent months. --more 1326 Local Time 1026 GMT