RAF Typhoon jets have operated alongside France's air force in a coordinated attack against an subterranean weapons facility in Syrian territory operated by the Islamic State group (IS), according to the UK's MoD.
The location, located using intelligence, was assessed as housing weapons and explosive materials, the statement said, and was positioned in hills just north of Palmyra in central Syria.
"Our aircraft used laser-guided Paveway IV weapons to target a number of approach shafts leading to the depot... preliminary assessments are that the objective was successfully hit," officials stated.
There was no evidence of any civilian casualties in the attack on Saturday evening and each participating jet made a safe return, the MoD added.
The Typhoon FGR4s were assisted by a Voyager tanker plane.
Daesh - referred to as Daesh - enforced extremist governance over significant areas in both Syria and Iraq before its territorial defeat in 2019.
"This operation shows the UK's leading role, and determination to stand shoulder to shoulder with our partners, to eradicate any re-emergence of Daesh and their harmful and extremist ideologies in the region," UK Defence Secretary John Healey remarked.
RAF aircraft have performed patrols over Syria to "forestall any efforts to regroup" of IS after its military defeat at the Baghuz confrontation in 2019, the MoD reported.
"I want to thank every member of our armed forces who took part in this operation for their expertise and their valour," Healey commented. "They were among a great many British troops stationed over the holidays. This action, to take out militants who endanger our safety, highlights how our armed forces are ready to step up, throughout the year, protecting the UK domestically and powerful internationally."
In December, the United States armed forces conducted what it called a "major assault" against Daesh sites in Syria, after an ambush killed two American soldiers and a civilian interpreter in Palmyra.
The United Nations reports Islamic State still has between 5,000 and 7,000 fighters in both countries.
