US service member killed, 2 wounded in 'apparent insider attack' in Afghanistan

A U.S. service member has been killed and two others were wounded in an "apparent insider attack" in southern Afghanistan on Saturday, according to NATO.

The two wounded service members were being treated for injuries and are in stable condition, the NATO Resolute Support mission said in a statement. 

The names of the service members will not be released until their next of kin were notified. Additional information was not immediately available and the incident was under investigation.

Fox News' Lucas Tomlinson and Samuel Chamberlain contributed to this report.