File photo of ANA officers standing at attention during a training exercise at the Kabul Military Training Centre in Afghanistan. Thomson Reuters Two members of the NATO-led Resolute Support mission were killed in southern Afghanistan on Saturday when individuals wearing Afghan uniform opened fire on them before themselves being killed, a statement from the mission said.

A statement from Romania's Foreign Minsistry claimed the NATO soldiers as their own.

"Two Resolute Support service members died this morning when two individuals wearing Afghan National Defense and Security Forces (ANDSF) uniforms opened fire at an ANDSF compound in Southern Afghanistan. Resolute Support members returned fire and killed the shooters," a NATO statement read.

After the attack, NATO forces returned fire, killing the shooters The Washington Post reports.

It gave no further details about the incident, which came as NATO commander General John Nicholson reviews plans to cut the number of US troops in Afghanistan by next year.