Four people were killed and seven injured when a bomb exploded on a railway line in the troubled province of Balochistan.
The incident occurred when the passenger train was going from Quetta to Rawalpindi.
A remote-controlled bomb was detonated resulting in killing of four people while seven others were injured, said a police official.
Three carriages of the train went off the track as the bomb exploded.
Balochistan is Pakistan’s largest and poorest province facing separatist insurgencies and ethnic and sectarian killings.
No group has claimed responsibility for the attack.