US authorities have disposed of the remains of so-called Islamic State leader Abu Bakr al-Baghdadi, the chairman of the US Joint Chiefs of Staff has said.

General Mike Milley also said there are no plans to release photos or videos of his death at this time.

Baghdadi detonated a suicide vest to kill himself as US forces closed in on him, US President Donald Trump said yesterday.

"The disposal of his remains has been done and is complete and was handled appropriately," Gen Milley told reporters at a Pentagon briefing.

Pentagon sources have said the remains were disposed of at sea.

No details were given on where or when the body was disposed of, but it paralleled the 2011 sea burial of al-Qaeda leader Osama bin Laden after he was killed in a US special forces raid.

Gen Milley also said two men were taken captive by US forces during the raid in on a compound in Syria.

"There were two adult males taken off the objective, alive," he said. "They're in our custody and they're in a secure facility."

Read more: The reclusive jihadist: Who was Abu Bakr al-Baghdadi?

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Meanwhile foreign ministers from the US-led coalition against S will meet in Washington on 14 November to weigh how to bolster the fight against the jihadist group, a senior State Department official said.

About 30-40 ministers and organisations that are part of the wider coalition will convene on the initiative of France and backed by US Secretary of State Mike Pompeo, aiming to boost the coalition's presence in northeast Syria, the official said.

"This is something President Trump has been working on both to get troops on the ground, airplanes in the air and money flowing to stabilisation in that area from partners and allies who are in the coalition," said the official, who spoke to reporters on the condition of anonymity.

Yesterday Mr Trump said Baghdadi had died "whimpering and crying" in the US special forces raid in northwestern Syria, fulfilling his top national security goal.

World leaders welcomed Baghdadi's death but said the campaign against IS, a group that perpetrated atrocities in the name of a fanatical version of Islam, was not over, with so-called "lone wolves" likely to seek revenge.