WASHINGTON (AP) — A grisly video released Tuesday shows Islamic State militants beheading American journalist James Foley, U.S. officials said, in what the extremists called retribution for recent U.S. airstrikes in Iraq. The militants threatened to kill another captive they also identified as an American journalist.

Separately, Foley’s family confirmed his death in a statement posted on a Facebook page that was created to rally support for his release, saying they “have never been prouder of him.”