"We reiterate the need to maintain and focus collective efforts on the fight against ISIS," said the statement issued after a meeting between French Foreign Minister Jean-Noel Barrot, Britain's Yvette Cooper, Germany's deputy foreign minister Serap Guler and US special envoy Tom Barrack in Paris.

"We call upon all parties to avoid any security vacuum in and around ISIS detention centers," it said.

The Kurdish-led Syrian Democratic Forces, who once controlled swathes of territory in the country's north and east, have withdrawn in the face of military pressure, as Syria's new Islamist authorities seek to extend control across the country.

This has prompted uncertainty around the thousands of suspected jihadists and their families held in prisons long secured by Kurdish-led forces in the northeast since IS's defeat in 2019.

"To address these concerns, we agreed to promptly convene a meeting of the International Coalition against ISIS," Tuesday's statement said.

The US military said last week it had launched an operation to move several thousand IS prisoners from Syria to Iraq.

IS swept across Syria and Iraq in 2014, committing massacres and other atrocities before ultimately being territorially defeated by the SDF and a US-led coalition.