Earlier accounts of the incident, which has damaged US-Afghan relations, had tallied 16 victims, including nine children and three women.

Bales, 38, a four-tour combat veteran, is being held at military detention center in Leavenworth, Kansas.

His civilian defense attorney, Seattle-based John Henry Browne, was not immediately available for comment.

Earlier this week, Browne said US authorities had no proof of what occurred on the evening in question, and said Bales had “no memory” of the incident.