Royal Air Force Typhoon fighter aircraft have conducted a mission with French aircraft in a combined operation targeting an underground arms cache in Syria operated by the Daesh militant organization, per a report from the British defence ministry.
The site, located using intelligence, was assessed as containing munitions and bombs, the release indicated, and was situated in mountainous terrain just above Palmyra in Syria's central region.
"Our aircraft used laser-guided Paveway IV weapons to strike a several access tunnels providing entry to the facility... early reports indicate the objective was successfully hit," the ministry announced.
There was no indication of any civilian casualties in the attack on Saturday evening and each participating jet made a safe return, the defence officials confirmed.
The British jets were supported by a Voyager refuelling tanker.
The Islamic State group - alternatively referred to as the so-called Islamic State - enforced militant control over large swathes of Syria and Iraq prior to its 2019 collapse.
"This strike shows the UK's leading role, and commitment to work closely with allied nations, to eliminate any re-emergence of Daesh and their dangerous and violent ideologies in the region," UK Defence Secretary the Defence Secretary stated.
British military aircraft have carried out overwatch operations over Syria to "prevent any attempted resurgence" of the group subsequent to its military defeat at the climactic battle in Baghuz in 2019, the ministry said.
"I must thank every member of British forces who took part in this operation for their professionalism and their bravery," he added. "Including them were numerous British personnel on duty over the holidays. This mission, to take out terrorist threats who endanger our safety, highlights how British military are prepared to act, throughout the year, ensuring Britain's security at home and powerful internationally."
During December, the American forces conducted what it termed a "large-scale strike" on Daesh sites in Syria, following an attack killed two US servicemembers and a local interpreter in Palmyra.
The UN says Daesh still maintains an estimated 5,000 to 7,000 militants in Iraq and Syria.