KABUL, Afghanistan (AP) - Gunmen ambushed a car carrying Afghan civilians working for a remote U.S. military base in eastern Afghanistan and killed eight of them execution-style, a police official said today.

The victims, who worked for the U.S. military as laborers in the mountainous Korangal area of Kunar province, were killed Thursday while driving home from work, said Abdul Saboor, Kunar's deputy police chief.

Gunmen stopped the workers' car and ordered them out before gunning them down, Saboor said.

It was unclear if there were any survivors or who was behind the killings, but pro-al-Qaida and Taliban insurgents have been operating throughout eastern Afghan regions bordering Pakistan.