"Three International Security Assistance Force service members died as a result of a non-battle related injury in western Afghanistan today." said a statement issued by NATO-led International Security Assistance Force (ISAF) here.
According to the statement the fourth soldier was killed in an insurgent attack in southern Afghanistan.
However, the brief statement did not reveal the nationalities of the victims, only saying "It is ISAF policy to defer casualty identification procedures to the relevant national authorities."
Troops mostly from Italy have been stationed in western Afghanistan while troops from U.S., Britain, Canada and Australia have been deployed in the southern region within the framework of ISAF to fight Taliban militants.
Sunday`s casualties bring to 335 the number of NATO service member who lost their lives since beginning this year in insurgency-hit country.
(Uu.H-AK)
Editor: Priyambodo RH
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