A soldier from the NATO-led International Security Assistance Force (ISAF) died in restive southern Afghan region on Tuesday, the ISAF forces confirmed. \"An International Security Assistance Force (ISAF) service member died as a result of a non-battle related injury in southern Afghanistan today,\" the ISAF said in a press release. However, the brief release did not reveal the nationality of the victim, only saying \"it is ISAF\'s policy to defer casualty identification procedures to the relevant national authorities.\" Troops mainly from the United States, Britain, Canada and Australia have been stationed in the southern region within the framework of ISAF to curb Taliban-linked insurgency there. A total of 50 NATO soldiers, most of them Americans, have been killed in Afghanistan since the beginning of this year. Currently more than 130,000 NATO-led ISAF with majority of them Americans have been serving in Afghanistan.