(CNN) Kabul, Afghanistan -- Six U.S. troops died Monday when a gunman in an Afghan Border Police uniform fired on NATO-led service members, the Pentagon said.
The shooting broke out during a training mission in eastern Afghanistan, the International Security Assistance Force said in a news release. A joint Afghan and ISAF team is investigating.
The suspect also was killed in the incident, the ISAF said.
Spokesman David Lapan confirmed the deaths, and said no names are being released pending notification of the families.