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Purported IS statement claims Jordanian airstrike has killed American woman hostage in Syria

  • 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, Matt Hinshaw) MANDATORY CREDIT

    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, Matt Hinshaw) MANDATORY CREDIT  (The Associated Press)

  • CORRECTS PHOTO CREDIT TO JO. L. KEENER  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

    CORRECTS PHOTO CREDIT TO JO. L. KEENER 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  (The Associated Press)

  • In this image made from undated video provided by Jordanian military via Jordan TV, explosions go off as the military carried out airstrikes at an undisclosed location in Syria. The military carried out airstrikes on Islamic State weapons depots and training sites on Thursday and Friday. King Abdullah II has thrust Jordan to the center of the war against the Islamic State group with his pledge of relentless retaliation for the killing of one of his pilots. (AP Photo/Jordanian military via Jordan TV)

    In this image made from undated video provided by Jordanian military via Jordan TV, explosions go off as the military carried out airstrikes at an undisclosed location in Syria. The military carried out airstrikes on Islamic State weapons depots and training sites on Thursday and Friday. King Abdullah II has thrust Jordan to the center of the war against the Islamic State group with his pledge of relentless retaliation for the killing of one of his pilots. (AP Photo/Jordanian military via Jordan TV)  (The Associated Press)

A purported statement by the Islamic State group claims that an American female hostage has been killed in Jordanian airstrikes on the outskirts of the northern Syrian city of Raqqa, the group's main stronghold.

It identified the woman as Kayla Jean Mueller and said she was killed Friday during Muslim prayers in airstrikes that targeted "the same location for more than an hour."

It published photos allegedly of the bombed site, showing a damaged three-story building.

American officials said they were looking into the report. The White House said it did not have immediate comment.

The statement could not be independently verified. It appeared on a militant website commonly used by IS.

Mueller is an aid worker whose identity was never disclosed out of concerns for her safety.