An Afghan official says at least seven Afghan soldiers were killed in an air strike by the international coalition in a province south of Kabul early on July 20.
Provincial army commander Abdul Razaq told the Associated Press that seven Afghan soldiers were killed and five wounded in the attack on an army checkpoint in the Baraki Barak district of Logar Province.
Logar Police Chief Mohammad Douod Ahmadi confirmed the number of casualties.
According to the Afghan Defense Ministry, the incident happened as coalition helicopters were flying over an area in Logar Province where clashes were under way between Afghan troops and Taliban fighters.
District Governor Mohammad Rahim Amin said the NATO air strike was a mistake, likely due to bad coordination.
A U.S. military spokesman in Afghanistan, Colonel Brian Tribus, said the coalition is investigating the incident.