The shocking video, captured in Mosul, shows a ‘spy’ in an orange jumpsuit being water-boarded before having his head forced into a fish tank.
The prisoner is forced to watch as one of the terrorists fills up the fish tank with water in front of him.
Earlier in the video, a wheelchair-bound fanatic is interviewed before he carries out a suicide attack in Mosul.
Tens of thousands of Iraqi forces are currently involved in the offensive to retake Mosul, which is the main northern city which is also Isis’s last major stronghold in Iraq.
WARNING: Disturbing content
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