QUETTA: Security forces, acting on a tip-off, defused explosives planted in the office of the Sui district coordination officer on Monday. Meanwhile, unidentified people blew up a pipeline in Loti Gas Field, suspending gas supply from the field. In another incident, unidentified people fired seven rockets which exploded near security forces camps in Dera Bugti, Kohlu, Treman and Pirkoh. There was no loss of life or property in the attack.