Royal Air Force Typhoon jets have joined forces with French aircraft in a coordinated attack on an subterranean weapons facility in Syria employed by the Islamic State group (IS), according to the UK's MoD.
The site, identified by intelligence, was believed to be housing weapons and explosive materials, the statement said, and was located in mountains just north of the ancient city of Palmyra in Syria's central region.
"Our fighter planes used Paveway IV guided bombs to target a number of access tunnels leading to the depot... preliminary assessments are that the strike was effective," officials stated.
There was no indication of any harm to civilians in the strike conducted Saturday night and every plane involved returned safely, the defence officials confirmed.
The Typhoon fighters were assisted by a Voyager tanker plane.
Daesh - referred to as ISIS - enforced jihadist rule over large swathes of both Syria and Iraq until 2019.
"This action shows the UK's leading role, and resolve to work closely with our allies, to stamp out any resurgence of IS and their harmful and extremist ideologies in the area," the British Defence Secretary the minister said.
UK warplanes have performed overwatch operations over Syrian airspace to "forestall any attempted resurgence" of the group following its defeat at the Baghuz confrontation in the year 2019, the MoD reported.
"I want to thank the personnel of British forces who took part in this mission for their professionalism and their bravery," Healey commented. "Including them were thousands of British personnel stationed over Christmas and New Year. This action, to remove dangerous terrorists who threaten our security, highlights how our armed forces are prepared to act, throughout the year, keeping Britain secure within its borders and strong abroad."
In December, the US military conducted what it termed a "large-scale strike" against Islamic State objectives in the country, subsequent to an ambush resulted in the deaths of two US servicemembers and a civilian interpreter in Palmyra.
The U.N. reports Islamic State still maintains between 5,000 and 7,000 militants in Iraq and Syria.