By Michele Corriston
Updated February 06, 2015 12:00 PM

The Islamic State claims to that a Jordanian airstrike has killed an American woman held hostage by the terrorist group for more than a year. by bombing the building in Syria during a Jordanian airstrike.

ISIS released a message – translated and published on by the SITE Intelligence Group – Friday on Twitter, taking credit for the violence.

The woman, who is not being named out by the media of respect for her family, was the last American held hostage by ISIS, according to The New York Times. She vanished in August 2013.