Pakistani separatist gunmen on a motorcycle have killed three Chinese engineers and their Pakistani driver in troubled southwestern Baluchistan province.
Local police say the drive-by shooting occurred on Wednesday in a remote town southeast of the provincial capital, Quetta. They say two of the workers and the driver were killed on the spot, while the third Chinese engineer succumbed to his injuries in a hospital.
A spokesman for a tribal militant group, the Baluchistan Liberation Army, claimed responsibility for the attack in a telephone call to a local newspaper.
In a separate development, in the North Waziristan tribal region bordering Afghanistan, Pakistani security forces arrested two men late Tuesday on suspicion of links with al-Qaida.
Foreign militants, including al-Qaida leader Osama bin Laden, are believed to be hiding in that rugged remote area.