Officials in southwestern Pakistan say insurgents have killed two police officers.  

Authorities say the militants opened fire on the police Friday on the outskirts of Quetta, the capital of the oil- and gas-rich Baluchistan province.

There was no immediate claim of responsibility.

The province has been gripped by a low-level insurgency for decades with ethnic Baluch rebels fighting for greater control over Baluchistan's natural resources or its secession from Pakistan.