British Air Force Typhoon FGR4s have conducted a mission with France's air force in a joint strike against an underground arms cache in Syria employed by the IS group, per a report from the UK Ministry of Defence.
The facility, located using intelligence, was thought to be housing weapons and explosive materials, the announcement noted, and was situated in hills just above Palmyra in Syria's central region.
"Our fighter planes utilized precision-guided Paveway IV munitions to target a series of approach shafts down to the site... preliminary assessments suggest the objective was successfully hit," the ministry announced.
There was no evidence of any civilian casualties in the attack on Saturday evening and each participating jet returned safely, the MoD added.
The Typhoon fighters were assisted by a Voyager aerial refuelling aircraft.
IS - alternatively referred to as Daesh - enforced extremist governance over parts of Iraq and Syria until 2019.
"This strike underscores the UK's leading role, and commitment to work closely with our allies, to eradicate any resurgence of IS and their violent and radical beliefs in the Middle East," UK Defence Secretary the minister remarked.
UK warplanes have performed patrols over Syrian airspace to "deter any attempted comeback" of Islamic State subsequent to its defeat at the climactic battle in Baghuz in 2019, the ministry said.
"I want to thank every member of the UK armed forces involved in this operation for their skill and their valour," the Defence Secretary said. "Including them were numerous British troops stationed over the holidays. This action, to eliminate dangerous terrorists who pose a risk to our way of life, shows how our armed forces are prepared to act, all year round, protecting the UK domestically and influential overseas."
In December, the American forces carried out what it called a "major assault" against Islamic State objectives in the country, after an ambush resulted in the deaths of two American soldiers and a civilian interpreter in the Palmyra area.
The U.N. reports Daesh still has an estimated 5,000 to 7,000 fighters in Iraq and Syria.