British Air Force Typhoon jets have joined forces with France's air force in a coordinated attack targeting an hidden munitions depot in Syrian territory used by the Islamic State group (IS), as stated by the UK Ministry of Defence.
The facility, identified by intelligence, was assessed as storing arms and explosives, the statement said, and was located in hills just to the north of Palmyra in Syria's central region.
"Our aircraft employed precision-guided Paveway IV munitions to strike a series of approach shafts leading to the facility... initial indications are that the objective was successfully hit," the MoD said.
There was no indication of any civilian casualties in the strike on Saturday evening and every plane involved made a safe return, the ministry further stated.
The British jets were assisted by a Voyager tanker plane.
Daesh - referred to as Daesh - enforced extremist governance over large swathes of both Syria and Iraq until 2019.
"This action demonstrates the UK's leading role, and commitment to stand shoulder to shoulder with allied nations, to eliminate any resurgence of the terrorist group and their dangerous and violent ideologies in the Middle East," Britain's Defence Chief John Healey said.
UK warplanes have carried out overwatch operations over Syria to "forestall any attempted resurgence" of IS after its routing at the battle of Baghuz in 2019, the ministry said.
"I want to thank the personnel of our armed forces participating in this strike for their professionalism and their bravery," he said. "Including them were a great many UK service members deployed over the holidays. This action, to eliminate terrorist threats who endanger our safety, highlights how UK forces are ready to step up, continuously, protecting the UK domestically and powerful internationally."
In December, the United States armed forces conducted what it called a "large-scale strike" on Daesh sites in Syria, subsequent to an ambush killed two US servicemembers and a local interpreter in Palmyra.
The U.N. says Daesh still maintains roughly 5-7 thousand militants in Iraq and Syria.
