Royal Air Force Typhoon jets have operated alongside French aircraft in a coordinated attack targeting an subterranean weapons facility in Syria used by the IS group, as stated by the UK's MoD.
The facility, pinpointed through reconnaissance, was thought to be containing munitions and bombs, the release indicated, and was situated in mountainous terrain just above the historic site of Palmyra in Syria's central region.
"Our fighter planes used Paveway IV guided bombs to target a several entry passages down to the site... initial indications are that the target was engaged successfully," the ministry announced.
There was no indication of any civilian casualties in the operation on Saturday evening and all the aircraft returned safely, the MoD added.
The Typhoon fighters were assisted by a Voyager aerial refuelling aircraft.
Daesh - referred to as ISIS - imposed extremist governance over parts of Iraq and Syria prior to its 2019 collapse.
"This operation underscores British leadership, and commitment to stand shoulder to shoulder with our partners, to stamp out any revival of the terrorist group and their violent and radical beliefs in the region," UK Defence Secretary John Healey remarked.
UK warplanes have performed patrols over Syria to "deter any attempted resurgence" of IS after its routing at the climactic battle in Baghuz in the year 2019, the ministry said.
"I want to thank the personnel of British forces involved in this operation for their professionalism and their courage," Healey commented. "They were part of numerous British personnel deployed over the holidays. This action, to remove dangerous terrorists who endanger our way of life, demonstrates how UK forces are ready to step up, throughout the year, ensuring Britain's security domestically and powerful internationally."
Last December, the United States armed forces conducted what it called a "large-scale strike" targeting IS targets in Syria, subsequent to an assault killed two American soldiers and a civilian interpreter in Palmyra.
The U.N. says IS still has between 5,000 and 7,000 combatants in both countries.
