An Iraqi police officer says six children were killed when a U.S. helicopter returned fire near an Iraqi school in Diyala province, near the Iranian border. The military was unable to confirm the report but said it was investigating.
One police officer said the helicopter was shot at from the ground during the morning.
The school was said to have been hit when the aircraft returned fire.
The officer said police had spoken to eyewitnesses and that six children had been killed and six injured but the figures have not been independently confirmed.