?Taliban militants' activities against NATO-led troops claimed the life of a soldier in the restive southern region of Afghanistan on Sunday, a press release of the alliance said.

"An International Security Assistance Force service member died following an insurgent attack in southern Afghanistan today," the press release added.

Since begining September this is the fourth NATO soldiers have been killed in Afghanistan.

The press release did not identify the nationality of the victim, saying it is ISAF policy to defer casualty identification procedures to the relevant national authorities.

More than 490 NATO soldiers with majority of them Americans have been killed since the beginning of this year in Afghanistan.