"New York Times" reports that the operation began on Thursday morning in a province consisting ktyesisht by Kurds in Kirkuk province.
If the soldier's death is confirmed, he will be the first US soldier killed ISIS found that began operations last year. The Pentagon is expected to be released soon with a statement about the operation.
International media write that the operation involved US soldiers, special forces Kurdish and Iraqi troops.
"They blocked the road and then raided the place, but managed to release hostages," said Karim Najmaldin governor of Kirkuk to the "New York Times".
In recent weeks, Kurdish forces are battling militants ISIS attempted to regain control of villages in the province of Kirkuk.
