ISIS leader Abu Bakr al-Baghdadi has been confirmed killed, according to the Syrian Observatory for Human Rights (SOHR).
Reports from the Coventry-based organisation are used by much of the world’s media to verify information from the Syrian rebels.
“(We have) confirmed information from leaders, including one of the first rank, in [ISIS territory] in the eastern countryside of Deir Ezzor,” director of the UK-based group Rami Abdulrahman told Reuters on Tuesday.
There has been no confirmation from ISIS’s official news agency Amaq. SOHR’s sources did not say when Baghdadi supposedly died, or how.
US, Kurdish and Iraqi sources were all quick to say they could not corroborate the SOHR report.
“We take any report of this nature with a large dose of salt,” Sebastian Gorka, deputy assistant to US President Donald Trump, said in an interview with Fox News after the SOHR claim surfaced. “We will verify it. We will look at the intelligence available… and we will give a statement when we have the requisite facts.”
Baghdadi was believed to be in hiding in the region around the Syria-Iraq border, moving frequently and avoiding telecommunications to evade detection.
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Rumours of his death have been reported frequently since he made his only public appearance announcing the creation of ISIS’s “caliphate” from the Iraqi city of Mosul in 2014.
In June, the Russian Foreign Ministry claimed to have carried out an air strike in Syria which killed Baghdadi and several other high profile ISIS leaders, but did not provide any evidence backing up the claim.
If the report is true, it comes as one of the biggest blows yet to the organisation which is rapidly losing territory across Syria and Iraq.
Last week the Iraqi army officially declared ISIS’s de facto Iraqi capital of Mosul “liberated,” marking the destruction of one half of the “caliphate.”