QUETTA: Suspected renegade tribesmen blew up a bridge on a major road in Balochistan on Thursday, disrupting traffic between Quetta and Karachi, an official told The Associated Press. No one was reported injured in the explosion in Ornach, a rugged area about 400 kilometres south of Quetta, said Abdul Samad, a local government administration official. The explosion on the bridge led to the suspension of traffic on the road linking Quetta with Karachi, stranding dozens of vehicles, Samad said. He did not give details on the extent of damage to the bridge, but said explosives planted under it had been set off. Authorities will divert traffic between Karachi and Quetta to an alternate route, Samad said. No one claimed responsibility for the explosion but Samad suspected local tribesmen. Separately, security forces seized arms from militants during a search operation in Dera Bugti district, while three more commanders of Nawab Akbar Bugti surrendered to the government on Thursday, Online reported.