ISLAMABAD, Jan. 30 (Xinhua) -- Several passengers were injured when a bomb went off near a railway track in Pakistan's southwest Balochistan province on Tuesday night, local reports said.

The blast hit Bolan Express when it was passing by Dera Allah Yar area of the province, the local ARY News reported, adding that four to five compartments of the train derailed in the explosion.

Security forces rushed to the site and cordoned off the blast site whereas the injured are being shifted to a nearby hospital.