Two separate attacks in southern Afghanistan have led to the deaths of two NATO service members.

NATO statements released Wednesay said one service member was killed by an improvised explosive device (IED) on Wednesday, while another service member died in an attack a day earlier.

Two other NATO service members died from non-battle injuries in the last two days in the south and east of the central Asian nation.

This week's deaths brings the total number of coalition deaths to 31 this month. So far this year, 132 NATO service members have died in Afghanistan.