Military authorities are investigating the friendly fire deaths of five Afghan soldiers Wednesday in eastern Afghanistan, officials said.
A NATO patrol in Ghazni province fired on the Afghan soldiers, mistaking them for insurgents, a statement from the International Security Assistance Force (ISAF) said.
"This loss of life is tragic, and we offer condolences to all those who lost loved ones," said Navy Capt. Jane Campbell, ISAF Joint Command spokeswoman. "We work extremely hard to coordinate and synchronize our operations, and we deeply regret the loss of lives from our Afghan partners."
A team of international and Afghan forces are looking into the incident.
Two other Afghan soldiers were wounded in the shooting.