A soldier with the NATO-led military contingent in Afghanistan was killed in the south of the insurgency-hit country, the force said Thursday. The International Security Assistance Force (ISAF) did not provide the nationality of the soldier killed on Wednesday or explain how he had died. "We are saddened by this brave serviceman's death, and our deepest condolences go to his family and loved ones, especially during this holiday season," ISAF spokesman Captain Mark Windsor said in a statement.