British Air Force Typhoon jets have conducted a mission with French aircraft in a coordinated attack targeting an underground arms cache in Syrian territory used by the Daesh militant organization, according to the UK's MoD.
The site, located using surveillance, was thought to be storing arms and explosives, the release indicated, and was situated in hills just above the historic site of Palmyra in Syria's central region.
"Our fighter planes employed laser-guided Paveway IV weapons to hit a number of access tunnels providing entry to the facility... initial indications suggest the strike was effective," the MoD said.
There was no evidence of any harm to civilians in the attack on Saturday evening and all the aircraft made a safe return, the defence officials confirmed.
The Typhoon FGR4s were assisted by a Voyager aerial refuelling aircraft.
IS - referred to as the so-called Islamic State - enforced extremist governance over large swathes of both Syria and Iraq until 2019.
"This operation underscores the UK's leading role, and determination to work closely with our partners, to eliminate any revival of IS and their violent and radical beliefs in the Middle East," UK Defence Secretary the minister remarked.
British military aircraft have performed surveillance missions over Syrian airspace to "forestall any efforts to regroup" of the group subsequent to its defeat at the climactic battle in Baghuz in 2019, the ministry said.
"I want to thank the personnel of the UK armed forces involved in this mission for their expertise and their valour," Healey said. "Including them were thousands of British personnel deployed over Christmas and New Year. This operation, to eliminate militants who threaten our safety, demonstrates how our armed forces are prepared to act, continuously, ensuring Britain's security domestically and powerful internationally."
In December, the American forces carried out what it described as a "major assault" on Islamic State objectives in the country, after an attack resulted in the deaths of two US servicemembers and a local interpreter in Palmyra.
The UN estimates Daesh still maintains an estimated 5,000 to 7,000 combatants in Syria and Iraq.
