Islamabad, Oct 20 : At least seven people were killed and six others injured when a bomb exploded in a passenger wagon travelling to Sui from Dera Bugti in Pakistan's Balochistan province.

The blast occurred in a bus at Mail Bazaar area of Dera Bugti on Saturday morning, in which seven passengers were killed on the spot and six others were seriously wounded, officials said.

The officials feared that death toll might increase. Security forces cordoned off the area immediately after the incident.

It was probably a remote-controlled device that was used for explosion in the bus, The News quoted sources, as saying. (ANI)