"Gunmen opened fire on a passenger van. Ten passengers and a passer-by were killed and four injured in the attack," senior police officer Jamil Ahmad Kakar told AFP by telephone.

Kakar said the gunmen were standing by the roadside and sprayed bullets at the van when it reached Spiny Road, on the outskirts of Quetta.

They succeeded in fleeing the scene after the shootings.

"One woman was among the dead while another was injured in the attack," he added.

Local intelligence and administrative officials confirmed the incident and casualties.

Copyright AFP (Agence France-Presse), 2011