British Air Force Typhoon FGR4s have joined forces with France's air force in a joint strike targeting an underground arms cache in Syrian territory used by the Daesh militant organization, according to the British defence ministry.
The site, identified by reconnaissance, was believed to be housing weapons and explosive materials, the release indicated, and was situated in hills just north of the ancient city of Palmyra in the heart of Syria.
"The RAF jets used Paveway IV guided bombs to hit a several approach shafts down to the facility... preliminary assessments suggest the objective was successfully hit," the MoD said.
There was no indication of any civilian impact in the attack late on Saturday and every plane involved returned to base without incident, the MoD added.
The Typhoon fighters were assisted by a Voyager aerial refuelling aircraft.
The Islamic State group - also known as ISIS - enforced jihadist rule over parts of Syria and Iraq until 2019.
"This operation demonstrates our UK leadership, and commitment to work closely with allied nations, to stamp out any revival of the terrorist group and their dangerous and violent ideologies in the area," Britain's Defence Chief the minister remarked.
British military aircraft have carried out patrols over Syrian airspace to "forestall any efforts to regroup" of the group after its military defeat at the battle of Baghuz in the year 2019, the authorities noted.
"I extend gratitude to all the members of our armed forces involved in this operation for their skill and their bravery," he said. "They were among a great many British personnel deployed over the holidays. This mission, to take out dangerous terrorists who endanger our safety, shows how British military are ready to step up, throughout the year, ensuring Britain's security within its borders and influential overseas."
During December, the American forces executed what it described as a "massive strike" on Daesh sites in the country, subsequent to an ambush claimed the lives of two US servicemembers and a civilian interpreter in Palmyra.
The U.N. reports Daesh still boasts roughly 5-7 thousand fighters in Iraq and Syria.