Royal Air Force Typhoon jets have joined forces with France's air force in a coordinated attack against an underground arms cache in Syria employed by the IS group, per a report from the British defence ministry.
The site, identified by reconnaissance, was assessed as storing arms and explosives, the statement said, and was situated in mountains just above the historic site of Palmyra in Syria's central region.
"Our aircraft employed Paveway IV guided bombs to target a series of approach shafts leading to the facility... preliminary assessments suggest the objective was successfully hit," the MoD said.
There was no evidence of any civilian casualties in the attack on Saturday evening and all the aircraft returned safely, the ministry further stated.
The British jets were backed up by a Voyager aerial refuelling aircraft.
IS - also known as Daesh - imposed militant control over significant areas in both Syria and Iraq before its territorial defeat in 2019.
"This strike shows the UK's leading role, and determination to stand shoulder to shoulder with allied nations, to eliminate any resurgence of IS and their harmful and extremist ideologies in the area," UK Defence Secretary the minister stated.
British military aircraft have carried out overwatch operations over Syria to "forestall any efforts to regroup" of the group after its defeat at the climactic battle in Baghuz in 2019, the authorities noted.
"I extend gratitude to all the members of our armed forces who took part in this strike for their professionalism and their courage," he said. "They were part of numerous British troops on duty over the holidays. This operation, to eliminate militants who pose a risk to our security, demonstrates how UK forces are ready to step up, continuously, protecting the UK at home and influential overseas."
During December, the US military conducted what it termed a "major assault" against Daesh sites in the country, after an ambush killed two US troops and a civilian interpreter in the Palmyra area.
The United Nations estimates Islamic State still maintains an estimated 5,000 to 7,000 militants in Syria and Iraq.
