Royal Air Force Typhoon jets have operated alongside French aircraft in a combined operation on an underground arms cache in Syria used by the Daesh militant organization, according to the British defence ministry.
The facility, identified by intelligence, was assessed as containing munitions and bombs, the release indicated, and was located in mountainous terrain just to the north of the historic site of Palmyra in the heart of Syria.
"Our aircraft employed precision-guided Paveway IV munitions to hit a series of access tunnels down to the site... early reports indicate the strike was effective," officials stated.
There was no sign of any harm to civilians in the operation late on Saturday and every plane involved made a safe return, the defence officials confirmed.
The Typhoon fighters were assisted by a Voyager tanker plane.
IS - also known as Daesh - enforced extremist governance over significant areas in Iraq and Syria until 2019.
"This strike shows British leadership, and resolve to operate in unison with allied nations, to stamp out any resurgence of IS and their dangerous and violent ideologies in the Middle East," the British Defence Secretary John Healey said.
RAF aircraft have carried out patrols over Syrian airspace to "prevent any efforts to regroup" of Islamic State subsequent to its defeat at the battle of Baghuz in 2019, the ministry said.
"I want to thank the personnel of our armed forces participating in this mission for their professionalism and their bravery," he added. "They were part of a great many British troops on duty over the festive period. This action, to take out terrorist threats who threaten our security, highlights how our armed forces are ready to step up, all year round, protecting the UK at home and influential overseas."
During December, the US military conducted what it called a "large-scale strike" targeting IS targets in Syria, subsequent to an attack resulted in the deaths of two American soldiers and a local interpreter in the Palmyra area.
The UN says IS still maintains an estimated 5,000 to 7,000 fighters in Syria and Iraq.
