British Air Force Typhoon fighter aircraft have conducted a mission with French warplanes in a coordinated attack on an underground arms cache in Syria used by the Daesh militant organization, per a report from the UK Ministry of Defence.
The facility, identified by reconnaissance, was believed to be containing munitions and bombs, the announcement noted, and was positioned in hills just north of the ancient city of Palmyra in Syria's central region.
"The RAF jets utilized Paveway IV guided bombs to strike a number of entry passages providing entry to the facility... early reports are that the target was engaged successfully," the MoD said.
There was no sign of any harm to civilians in the strike conducted Saturday night and each participating jet made a safe return, the defence officials confirmed.
The Typhoon FGR4s were backed up by a Voyager refuelling tanker.
The Islamic State group - also known as ISIS - established militant control over parts of both Syria and Iraq prior to its 2019 collapse.
"This strike shows our UK leadership, and resolve to operate in unison with our allies, to eliminate any revival of Daesh and their violent and radical beliefs in the region," Britain's Defence Chief the minister stated.
RAF aircraft have performed patrols over Syrian airspace to "forestall any attempted resurgence" of Islamic State following its defeat at the battle of Baghuz in 2019, the authorities noted.
"I must thank every member of the UK armed forces participating in this mission for their skill and their courage," he said. "Including them were numerous British troops stationed over the holidays. This action, to take out militants who pose a risk to our security, demonstrates how British military are ready to step up, continuously, keeping Britain secure domestically and influential overseas."
Last December, the US military conducted what it called a "major assault" on IS targets in Syria, after an ambush killed two American soldiers and a civilian interpreter in Palmyra.
The UN reports IS still maintains an estimated 5,000 to 7,000 militants in both countries.