KABUL, Jan. 6 (Xinhua) -- A soldier with the NATO-led International Security Assistance Force (ISAF) was killed in the Taliban-linked attack in Afghanistan on Friday, bringing the number of casualties to four since Thursday, a statement of the alliance said. "An International Security Assistance Force service member died following an insurgent attack in southern Afghanistan today," the statement said.
Howevver, it did not identify the nationality of the victim, saying it is ISAF policy to defer causality identification procedures to the relevant national authorities.
Three more service members of the NATO-led forces were killed by a roadside bomb in southern Afghanistan on Thursday.
The southern Afghan provinces of Kandahar, Helmand, Zabul and Uruzgan have been regarded as the hotbed of Taliban militants.
Since the begining of 2012, six foreign soldiers have been killed in Afghanistan.