Railway officials on Tuesday banned all trains from running at night in Balochistan after a blast the night before tore apart a main line for the second time, while a rocket was fired at a military workshop but caused no casualties. Timetables have been changed and trains will only run in daytime to limit the damage from any further attacks by angry nationalist tribesmen in Balochistan demanding more political rights, jobs and royalties from the province's natural resources, AFP reported. Services between Quetta and Karachi resumed on Tuesday after engineers repaired tracks damaged by the bomb late on Monday. The same line was hit by another explosion on Saturday. "The timing has been changed due to security concerns and no train will operate at night," Railway Deputy Controller Ghulam Rasool told AFP. Mohammad Shoaib, another railway official, told Reuters the authorities had also changed train timings in other parts of the country.Staff Report adds: Quetta Nazim Rahim Kakar said that the rocket fired on Tuesday landed near a workshop in the Alamo area behind a medical complex in Quetta, but did no damage. Rocket attacks in the Cantonment areas were routine in the past but had gone down, only to return after recent violence in Sui.