In this May 30, 2013, photo, Kayla Mueller is shown after speaking to a group in Prescott, Ariz. A statement that appeared on a militant website commonly used by the Islamic State group claimed that Mueller was killed in a Jordanian airstrike on Friday, Feb. 6, 2015, on the outskirts of the northern Syrian city of Raqqa, the militant group's main stronghold. The IS statement could not be independently verified. (AP Photo/The Daily Courier, Jo. L. Keener ) MANDATORY CREDIT

American ISIS hostage has died

The parents of an American woman held by Islamic State militants say they have been notified of her death.