KHARTOUM, Sudan - A Chinese diplomat in Khartoum says nine Chinese oil workers have been kidnapped by unknown assailants in the southern Kordofan province.

The diplomat says the men were kidnapped Saturday and their vehicle was also taken. The kidnapping was discovered because several oil workers escaped and told authorities about it.

The diplomat, who spoke on condition of anonymity because he was not authorized to speak to the press, says no further details were immediately available.

China is one of the largest investors in Sudan's oil industry.