British Air Force Typhoon jets have conducted a mission with France's air force in a combined operation on an underground arms cache in Syria operated by the IS group, as stated by the British defence ministry.
The site, pinpointed through reconnaissance, was believed to be housing weapons and explosive materials, the statement said, and was situated in mountains just to the north of Palmyra in Syria's central region.
"Our fighter planes employed laser-guided Paveway IV weapons to hit a series of entry passages leading to the site... early reports indicate the strike was effective," the ministry announced.
There was no sign of any civilian casualties in the attack on Saturday evening and each participating jet returned to base without incident, the MoD added.
The Typhoon FGR4s were supported by a Voyager aerial refuelling aircraft.
Daesh - also known as Daesh - established extremist governance over significant areas in both Syria and Iraq before its territorial defeat in 2019.
"This operation underscores the UK's leading role, and resolve to operate in unison with our partners, to eradicate any re-emergence of IS and their harmful and extremist ideologies in the area," UK Defence Secretary the Defence Secretary remarked.
UK warplanes have carried out surveillance missions over Syria to "prevent any efforts to regroup" of Islamic State following its routing at the climactic battle in Baghuz in 2019, the authorities noted.
"I extend gratitude to all the members of our armed forces who took part in this mission for their expertise and their bravery," Healey said. "Including them were thousands of British troops on duty over the festive period. This mission, to eliminate dangerous terrorists who threaten our way of life, highlights how UK forces are prepared to act, continuously, keeping Britain secure domestically and strong abroad."
Last December, the US military carried out what it described as a "massive strike" targeting Daesh sites in the country, subsequent to an ambush resulted in the deaths of two American soldiers and a local interpreter in Palmyra.
The United Nations reports Daesh still has roughly 5-7 thousand fighters in Iraq and Syria.
