RAF Typhoon jets have joined forces with French warplanes in a combined operation against an hidden munitions depot in Syria operated by the Islamic State group (IS), according to the UK's MoD.
The facility, located using intelligence, was thought to be storing arms and explosives, the statement said, and was situated in mountainous terrain just above the ancient city of Palmyra in Syria's central region.
"The RAF jets used precision-guided Paveway IV munitions to strike a series of entry passages leading to the site... early reports suggest the target was engaged successfully," the MoD said.
There was no indication of any civilian casualties in the operation conducted Saturday night and all the aircraft returned safely, the ministry further stated.
The British jets were supported by a Voyager tanker plane.
Daesh - also known as Daesh - established militant control over parts of both Syria and Iraq before its territorial defeat in 2019.
"This action demonstrates British leadership, and commitment to work closely with allied nations, to eliminate any revival of Daesh and their violent and radical beliefs in the area," Britain's Defence Chief the minister said.
British military aircraft have conducted overwatch operations over Syrian airspace to "deter any attempted resurgence" of Islamic State after its routing at the Baghuz confrontation in 2019, the MoD reported.
"I must thank all the members of British forces participating in this mission for their professionalism and their valour," Healey added. "They were part of a great many British personnel on duty over the holidays. This mission, to eliminate terrorist threats who endanger our security, highlights how British military are ready to step up, continuously, keeping Britain secure at home and influential overseas."
Last December, the US military conducted what it termed a "major assault" targeting IS targets in the country, following an ambush claimed the lives of two US troops and a civilian linguist in the Palmyra area.
The UN estimates Daesh still has between 5,000 and 7,000 combatants in both countries.
