RAF Typhoon fighter aircraft have conducted a mission with French warplanes in a joint strike against an underground arms cache in Syrian territory employed by the Islamic State group (IS), according to the UK's MoD.
The facility, located using intelligence, was believed to be storing arms and explosives, the release indicated, and was positioned in hills just north of the historic site of Palmyra in the heart of Syria.
"Our aircraft utilized laser-guided Paveway IV weapons to hit a several access tunnels down to the facility... preliminary assessments indicate the target was engaged successfully," the ministry announced.
There was no evidence of any harm to civilians in the attack late on Saturday and each participating jet made a safe return, the defence officials confirmed.
The British jets were supported by a Voyager refuelling tanker.
Daesh - also known as ISIS - imposed extremist governance over parts of Syria and Iraq before its territorial defeat in 2019.
"This strike shows British leadership, and determination to operate in unison with our allies, to stamp out any re-emergence of IS and their violent and radical beliefs in the Middle East," UK Defence Secretary the minister remarked.
RAF aircraft have conducted patrols over Syria to "forestall any attempted comeback" of IS after its military defeat at the battle of Baghuz in 2019, the MoD reported.
"I extend gratitude to every member of the UK armed forces participating in this strike for their skill and their courage," he said. "They were part of a great many British troops deployed over Christmas and New Year. This operation, to eliminate militants who pose a risk to our way of life, demonstrates how our armed forces are ready to step up, all year round, keeping Britain secure within its borders and powerful internationally."
During December, the American forces conducted what it described as a "large-scale strike" targeting Daesh sites in the country, subsequent to an ambush claimed the lives of two US troops and a civilian linguist in the Palmyra area.
The United Nations says Islamic State still has an estimated 5,000 to 7,000 combatants in Syria and Iraq.
