Two US helicopters crashed Monday in northern Iraq, killing four American troops, the US military said.
The military said the crash happened at about 2:15 a.m. local time and it "does not appear to be by enemy action."
No precise location was given, but a military spokesman said it occurred in Tamim province, which includes the oil-rich disputed city of Kirkuk.
Iraqi officials said the crash site was located about 20 miles west of Kirkuk, which is about 180 miles north of Baghdad. They spoke on condition of anonymity because they were not supposed to release the information.
Maj. Derrick Cheng, a spokesman for US forces in northern Iraq, said all the dead were Americans. He declined to give more details or say