Jamal al-Harith, a Muslim convert born Ronald Fiddler who detonated a car bomb at an Iraqi army base near Mosul, was released from the US detention camp in 2004 and successfully claimed compensation after saying British agents knew or were complicit in his mistreatment.
Al-Harith, who used the nom de guerre Abu-Zakariya al-Britani, entered Syria via Turkey in 2014 to join Islamic State of Iraq and the Levant, leading to questions at the time about the monitoring of terrorist suspects.
It also raised the possibility that compensation money paid by British taxpayers had been handed on by him to Isil.
Earlier this week Isil released an image of him sitting inside the bomb car grinning broadly, with wires and what may be a detonation button in the background.
A statement released by the terrorist group said: “The martyrdom-seeking brother Abu Zakariya al-Britani – may Allah accept him – detonated his explosives-laden vehicle on a …
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