An Afghan military official says a NATO airstrike has killed four Afghan soldiers in the country’s south, mistaking them for militants.

A spokesman for the Defence Ministry says the Afghan soldiers had left their base in Helmand province on Wednesday night for a patrol when they came under fire from NATO planes.

Gen. Mohammad Zahir Azimi says NATO told the Afghan government that the coalition thought the men were militants.

A spokesman for NATO forces, Capt. Ciro Parisi of the Italian army, says they have sent a team to investigate the incident.

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