A bomb exploded on a bus carrying government employees in restive northwest Pakistan killing at least 17 people on Friday, officials said.
The incident happened in Peshawar, the main city of Khyber Pakhtunkhwa province, which has been hit by numerous bomb and gun attacks blamed on Taliban insurgents in recent years.
"The bomb was planted inside the bus. At the moment, the death of 17 people have been confirmed," Zahirul Islam, deputy commissioner of Peshawar, told AFP.
Nasir Durrani, the police chief of Khyber Pakhtunkhwa, told reporters the remote-controlled bomb was planted at the back of the bus, which was taking government staff home to the town of Charsadda after work.
Durrani confirmed that 17 people have been killed and 43 wounded.
An eyewitness speaking on a private TV news channel said the blast was so powerful it threw victims' bodies clear of the vehicle and onto the roadside.
Footage showed the back of the bus reduced to a tangle of twisted metal by the force of the explosion.
Nine dead bodies have been taken to Lady Reading Hospital in Peshawar while eight bodies have been taken to a government hospital in Charsadda.
The target was government employees, Sahibzada Mohammad Anis, the commissioner of Peshawar, told AFP.