QUETTA - Four people including two women and a pro-government tribesman were shot dead in Sui area of Dera Bugti district on Sunday. According to reports reaching here, unknown armed people sprayed bullets on a group of persons in Siyaab area of Sui and escaped from the site after committing crime. As a result, four people including two women, a pro-government tribesman Wadera Wazir Khan and his companion received critical wounds and succumbed to their injuries on the spot. Police shifted the bodies to hospital and handed them over to their heirs after completing legal formalities. So far no group has taken responsibility for the killings. Meanwhile, a 16-inch diameter gas pipeline was blown up in Dera Bugti. Unknown people had planted explosive material under the foundation of a 16- inch diameter gas pipeline in Zain Koh area. The material exploded and damaged pipeline and suspended gas supply to the plant. Meanwhile, Sarbaaz Baloch, claiming to be the spokesman of the defunct Baloch Republican Army claimed responsibility for blowing up of gas pipeline.