British Air Force Typhoon jets have operated alongside French warplanes in a coordinated attack against an underground arms cache in Syrian territory employed by the Daesh militant organization, according to the UK's MoD.
The location, identified by intelligence, was believed to be housing weapons and explosive materials, the announcement noted, and was situated in mountainous terrain just above Palmyra in the heart of Syria.
"The RAF jets employed Paveway IV guided bombs to strike a number of entry passages providing entry to the facility... initial indications suggest the strike was effective," the ministry announced.
There was no evidence of any harm to civilians in the strike conducted Saturday night and all the aircraft returned safely, the MoD added.
The Typhoon FGR4s were supported by a Voyager aerial refuelling aircraft.
Daesh - also known as ISIS - enforced extremist governance over large swathes of Iraq and Syria until 2019.
"This action demonstrates the UK's leading role, and commitment to work closely with our partners, to stamp out any re-emergence of IS and their violent and radical beliefs in the Middle East," UK Defence Secretary the Defence Secretary remarked.
RAF aircraft have performed surveillance missions over Syrian airspace to "deter any attempted resurgence" of Islamic State after its military defeat at the climactic battle in Baghuz in 2019, the ministry said.
"I extend gratitude to the personnel of the UK armed forces who took part in this strike for their skill and their courage," Healey added. "They were part of a great many British personnel on duty over Christmas and New Year. This operation, to take out dangerous terrorists who endanger our security, demonstrates how British military are prepared to act, continuously, protecting the UK at home and strong abroad."
In December, the American forces executed what it termed a "massive strike" targeting Daesh sites in the country, subsequent to an ambush claimed the lives of two American soldiers and a local interpreter in the Palmyra area.
The UN estimates IS still maintains between 5,000 and 7,000 militants in Iraq and Syria.
