The accident occurred when a bus travelling from Rawalpindi to Bhakkar collided with another bus coming from the opposite direction, killing 12 people and injuring 25 others, a private television channel reported.
Most of the dead belonged to Tehsil Darya Khan of Bhakkar and areas adjacent to it.
According to rescue officials, the accident occurred due to over-speeding.
The injured were shifted to a nearby hospital where conditions of some among the injured were stated to be critical. APP