Afghan police say a rogue Afghan guard has shot dead two NATO troops and wounded a third in a northern province.

Police chief General Qasim Jangalbagh said the guard opened fired on the NATO soldiers Saturday as they were traveling with a reconstruction convoy in Panjshir province. A NATO service member fired back and killed the guard.

NATO has said more that 280 of its service members have died in Afghanistan this year.

The latest shooting of NATO personnel by Afghan forces is one of several that have hindered the war effort in the country. A rogue Afghan solider killed an Australian soldier in late May.