A suicide bomber killed nine police officers and wounded 16 others Monday in an attack on their truck in southwestern Pakistan, officials said.

"The suicide bomber was riding a motorbike and hit the truck from behind," senior police official Abdul Hai Aamir told AFP.

The incident took place at Dhadar, the main town of Kachhi district, some 120 kilometers southeast of Quetta in Balochistan.

Police chief for Kachhi district Mehmood Notezai told AFP the police were returning from a week-long cattle show where they had been providing security.