December 2, 2015 1:55 PM EST

The Islamic State of Iraq and Greater Syria (ISIS) claims it has beheaded an alleged Russian spy in a killing at the hands of a Russian jihadi.

In a video released by the terror group Wednesday, an unidentified captive is seen kneeling in front of another man clutching a knife, according to Flashpoint Intelligence, a global security firm and NBC News consultant. The video is titled, “You Shall be Disappointed and Humiliated O Russians.”

The captor, who is not masked, speaks in what sounds to be Russian before cutting the prisoner’s throat.

The grisly execution would appear to be the. . .

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