Royal Air Force Typhoon jets have operated alongside French warplanes in a combined operation targeting an underground arms cache in Syria used by the IS group, as stated by the UK's MoD.
The facility, identified by reconnaissance, was believed to be storing arms and explosives, the announcement noted, and was situated in mountainous terrain just north of the ancient city of Palmyra in the heart of Syria.
"Our aircraft employed Paveway IV guided bombs to hit a series of entry passages down to the facility... early reports are that the target was engaged successfully," the MoD said.
There was no sign of any civilian casualties in the operation conducted Saturday night and each participating jet returned to base without incident, the ministry further stated.
The Typhoon fighters were supported by a Voyager aerial refuelling aircraft.
Daesh - referred to as Daesh - enforced militant control over parts of Syria and Iraq until 2019.
"This action shows British leadership, and commitment to operate in unison with our allies, to stamp out any resurgence of the terrorist group and their dangerous and violent ideologies in the region," Britain's Defence Chief the Defence Secretary said.
British military aircraft have carried out surveillance missions over Syria to "forestall any attempted comeback" of the group subsequent to its defeat at the battle of Baghuz in 2019, the authorities noted.
"I extend gratitude to the personnel of the UK armed forces who took part in this operation for their professionalism and their courage," he commented. "They were among thousands of British troops stationed over the holidays. This operation, to remove dangerous terrorists who threaten our way of life, demonstrates how our armed forces are prepared to act, continuously, ensuring Britain's security domestically and strong abroad."
Last December, the US military conducted what it termed a "massive strike" against IS targets in the country, subsequent to an attack killed two US servicemembers and a local interpreter in Palmyra.
The UN reports IS still boasts an estimated 5,000 to 7,000 combatants in Iraq and Syria.
