RAF Typhoon FGR4s have joined forces with French warplanes in a combined operation targeting an underground arms cache in Syria employed by the IS group, per a report from the UK's MoD.
The site, identified by reconnaissance, was thought to be housing weapons and explosive materials, the announcement noted, and was positioned in hills just north of Palmyra in the heart of Syria.
"Our fighter planes used precision-guided Paveway IV munitions to hit a series of entry passages leading to the facility... initial indications are that the objective was successfully hit," the ministry announced.
There was no indication of any civilian impact in the attack late on Saturday and every plane involved returned to base without incident, the ministry further stated.
The Typhoon FGR4s were assisted by a Voyager tanker plane.
The Islamic State group - referred to as the so-called Islamic State - established extremist governance over parts of both Syria and Iraq prior to its 2019 collapse.
"This strike demonstrates the UK's leading role, and determination to work closely with our allies, to stamp out any re-emergence of Daesh and their harmful and extremist ideologies in the area," the British Defence Secretary John Healey remarked.
British military aircraft have performed patrols over Syrian airspace to "deter any attempted resurgence" of the group after its routing at the Baghuz confrontation in 2019, the MoD reported.
"I extend gratitude to all the members of our armed forces participating in this mission for their skill and their courage," he added. "Including them were thousands of British troops stationed over Christmas and New Year. This mission, to remove militants who pose a risk to our safety, shows how British military are always on standby, throughout the year, keeping Britain secure domestically and strong abroad."
In December, the United States armed forces carried out what it termed a "major assault" targeting Islamic State objectives in the country, after an assault killed two US servicemembers and a civilian linguist in the Palmyra area.
The U.N. reports Daesh still maintains between 5,000 and 7,000 combatants in Syria and Iraq.
