A NATO soldier was killed in restive southern Afghanistan region on Saturday, the military alliance confirmed on Sunday.

"An International Security Assistance Force (ISAF) service member died while conducting combat operations in southern Afghanistan yesterday," the NATO-led ISAF said in a statement.

However, the brief statements did not reveal the nationality of the victim under ISAF policy.

Troops mainly from U.S., Britain, Canada and Australia have been stationed in the southern region, within the framework of ISAF to fight Taliban militants there.

Over 530 foreign soldiers with the ISAF, most of them Americans, have been killed in Afghanistan so far this year.