BHAKKAR: Multan-bound Mehr Express collided Friday night with a trailer truck carrying sugarcane produce here near the city's Shah Alam area, rescue officials said.

Two of the train's bogies, as well as its engine, consequently derailed, causing the 128 down track to be halted for railway passage, rescue sources explained.

At least four people ? three passengers and the train driver ? were injured during the accident, with an emergency medical aid team dispatched immediately.

The train had departed from Rawalpindi and was on way to Multan, rescue officers mentioned, adding that the collision occurred when the trailer carrying produce got stuck at the railway track.