The Pentagon is "reasonably certain" that the extremist Jihadi John has been killed in an air strike.
US military spokesman Colonel Steve Warren said it would take "some time" to confirm the death of the notorious British killer - real name Mohammed Emwazi - who was targeted in Islamic State's Syrian stronghold.
David Cameron has hailed the apparent death of Jihadi John as a "strike at the heart" of the extremist group.
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But Labour leader Jeremy Corbyn said it would have been "far better" if Emwazi had been brought to justice in the courts for his "callous and brutal crimes".