Two NATO soldiers were killed on Saturday in an insurgent attack in restive southern Afghanistan\'s region, the military alliance confirmed on Sunday. \"Two International Security Assistance Force service members died following an insurgent attack in southern Afghanistan yesterday,\" the NATO-led International Security Assistance Force (ISAF) said in a statement. The brief statement did not give details and the nationalities of the casualties under ISAF policy, only saying \"it is ISAF policy to defer casualty identification procedures to the relevant national authorities.\" 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. Militancy has been rampant since May this year when Taliban militants announced to launch spring offensive in the war-battered Afghanistan. Over 470 NATO soldiers, most of them Americans, have been killed in Afghanistan since beginning this year.