NATO says a man wearing an Afghan army uniform has killed two service members in eastern Afghanistan.
The alliance says the two NATO troops were killed on Thursday when the man turned his weapon against them.
NATO released no further details and did not disclose the nationalities of the slain service members. There was no word on what happened to the attacker.
The shooting appeared to be the latest in a series of attacks by members of the Afghan security forces against their coalition partners. Such attacks have raised fears of increased Taliban infiltration of the Afghan police and army as NATO speeds up the training of the security forces.