An Afghan police shot dead two NATO soldiers, the alliance said Friday.

"Two International Security Assistance Force service members died following a shooting incident at an Afghan National Civil Order Police (ANCOP) compound in Helmand province yesterday ( Thursday)," the NATO-led International Security Assistance Force (ISAF) admitted in a statement released here.

The ISAF service members were part of a mentoring team who arrived at the compound to provide mentoring support for the 5th ANCOP brigade, the statement said.

According to the alliance statement, the mentoring team was preparing to eat lunch with the ANCOP when a uniformed Afghan National Civil Order Policeman began shooting at ISAF service members, resulting in the deaths of two ISAF service members.

It also added that the shooter was seriously injured in the incident and is currently in a medical treatment facility.

"While this is a serious incident, the actions of this individual do not reflect the overall actions of our Afghan partners," said U.S. Marine Corps Maj. Gen. James B. Laster, ISAF Joint Command Deputy Chief of Staff Joint Operations in the statement.

It is not the first time that NATO-led forces troopers are killed by their Afghan partners.

In the previous example of such an incident, an Afghan pilot opened fire on international peacekeeping soldiers at Afghan Air Corps, leaving nine American soldiers dead and five Afghans injured late last April.