RAF Typhoon fighter aircraft have joined forces with French warplanes in a joint strike targeting an underground arms cache in Syrian territory used by the Islamic State group (IS), according to the UK's MoD.
The facility, located using intelligence, was assessed as housing weapons and explosive materials, the release indicated, and was situated in mountains just to the north of Palmyra in Syria's central region.
"The RAF jets utilized precision-guided Paveway IV munitions to strike a series of entry passages providing entry to the facility... preliminary assessments indicate the target was engaged successfully," officials stated.
There was no indication of any civilian impact in the operation late on Saturday and each participating jet returned to base without incident, the defence officials confirmed.
The British jets were assisted by a Voyager aerial refuelling aircraft.
Daesh - alternatively referred to as the so-called Islamic State - imposed extremist governance over large swathes of both Syria and Iraq prior to its 2019 collapse.
"This strike underscores British leadership, and commitment to operate in unison with our partners, to eradicate any resurgence of Daesh and their harmful and extremist ideologies in the area," Britain's Defence Chief John Healey said.
UK warplanes have performed patrols over Syrian airspace to "prevent any efforts to regroup" of IS subsequent to its military defeat at the battle of Baghuz in 2019, the authorities noted.
"I want to thank every member of our armed forces involved in this strike for their professionalism and their bravery," he said. "Including them were thousands of UK service members on duty over Christmas and New Year. This operation, to remove terrorist threats who endanger our security, demonstrates how UK forces are ready to step up, continuously, ensuring Britain's security domestically and influential overseas."
In December, the American forces executed what it called a "large-scale strike" against Daesh sites in Syria, subsequent to an attack claimed the lives of two American soldiers and a civilian interpreter in Palmyra.
The United Nations says Daesh still boasts roughly 5-7 thousand militants in Iraq and Syria.
