RAF Typhoon FGR4s have operated alongside France's air force in a coordinated attack on an subterranean weapons facility in Syrian territory used by the Islamic State group (IS), according to the UK Ministry of Defence.
The site, pinpointed through intelligence, was believed to be containing munitions and bombs, the release indicated, and was located in mountainous terrain just to the north of the ancient city of Palmyra in central Syria.
"The RAF jets used precision-guided Paveway IV munitions to target a series of approach shafts providing entry to the site... preliminary assessments are that the target was engaged successfully," the ministry announced.
There was no indication of any harm to civilians in the attack on Saturday evening and all the aircraft returned to base without incident, the MoD added.
The Typhoon FGR4s were backed up by a Voyager refuelling tanker.
Daesh - also known as ISIS - imposed militant control over large swathes of Iraq and Syria prior to its 2019 collapse.
"This action underscores British leadership, and resolve to operate in unison with our partners, to eradicate any revival of Daesh and their violent and radical beliefs in the area," UK Defence Secretary John Healey remarked.
RAF aircraft have carried out patrols over Syrian airspace to "prevent any efforts to regroup" of Islamic State following its defeat at the Baghuz confrontation in the year 2019, the authorities noted.
"I extend gratitude to all the members of our armed forces participating in this mission for their expertise and their bravery," the Defence Secretary said. "They were part of a great many British personnel on duty over the festive period. This operation, to eliminate terrorist threats who endanger our way of life, shows how UK forces are prepared to act, continuously, ensuring Britain's security at home and influential overseas."
Last December, the United States armed forces carried out what it called a "massive strike" against Islamic State objectives in the country, following an ambush resulted in the deaths of two US servicemembers and a civilian linguist in the Palmyra area.
The United Nations says Daesh still has roughly 5-7 thousand combatants in Iraq and Syria.
