British Air Force Typhoon FGR4s have joined forces with French warplanes in a joint strike targeting an subterranean weapons facility in Syrian territory used by the Islamic State group (IS), according to the UK's MoD.
The site, identified by reconnaissance, was thought to be housing weapons and explosive materials, the release indicated, and was located in hills just north of the ancient city of Palmyra in the heart of Syria.
"Our fighter planes utilized Paveway IV guided bombs to hit a several access tunnels leading to the site... initial indications are that the objective was successfully hit," officials stated.
There was no sign of any civilian casualties in the attack late on Saturday and all the aircraft returned safely, the ministry further stated.
The Typhoon FGR4s were supported by a Voyager refuelling tanker.
Daesh - also known as ISIS - imposed jihadist rule over large swathes of Iraq and Syria prior to its 2019 collapse.
"This action shows British leadership, and resolve to work closely with our partners, to eliminate any re-emergence of the terrorist group and their dangerous and violent ideologies in the area," UK Defence Secretary John Healey said.
UK warplanes have carried out patrols over Syrian airspace to "prevent any efforts to regroup" of the group after its routing at the climactic battle in Baghuz in 2019, the ministry said.
"I extend gratitude to every member of the UK armed forces participating in this operation for their professionalism and their bravery," he added. "They were among thousands of UK service members on duty over Christmas and New Year. This mission, to eliminate dangerous terrorists who pose a risk to our way of life, shows how our armed forces are always on standby, all year round, keeping Britain secure within its borders and strong abroad."
Last December, the American forces executed what it termed a "major assault" against Daesh sites in Syria, subsequent to an ambush resulted in the deaths of two US servicemembers and a civilian interpreter in the Palmyra area.
The United Nations reports Daesh still maintains between 5,000 and 7,000 militants in Iraq and Syria.
