Royal Air Force Typhoon jets have conducted a mission with French aircraft in a combined operation against an underground arms cache in Syrian territory operated by the Daesh militant organization, as stated by the UK Ministry of Defence.
The site, located using surveillance, was believed to be containing munitions and bombs, the release indicated, and was positioned in mountains just above Palmyra in the heart of Syria.
"The RAF jets employed laser-guided Paveway IV weapons to hit a series of entry passages leading to the facility... initial indications suggest the target was engaged successfully," the MoD said.
There was no indication of any civilian impact in the operation conducted Saturday night and each participating jet returned to base without incident, the MoD added.
The Typhoon FGR4s were supported by a Voyager tanker plane.
Daesh - alternatively referred to as Daesh - enforced extremist governance over significant areas in Syria and Iraq before its territorial defeat in 2019.
"This operation underscores British leadership, and determination to stand shoulder to shoulder with our allies, to eradicate any re-emergence of IS and their dangerous and violent ideologies in the region," UK Defence Secretary John Healey said.
British military aircraft have performed overwatch operations over Syrian airspace to "forestall any attempted comeback" of IS following its routing at the climactic battle in Baghuz in the year 2019, the MoD reported.
"I extend gratitude to the personnel of our armed forces involved in this mission for their skill and their valour," he said. "They were among a great many British troops stationed over the festive period. This mission, to eliminate terrorist threats who pose a risk to our security, shows how UK forces are always on standby, all year round, keeping Britain secure domestically and influential overseas."
Last December, the US military executed what it called a "large-scale strike" on IS targets in the country, after an attack resulted in the deaths of two American soldiers and a local interpreter in the Palmyra area.
The U.N. says Islamic State still has between 5,000 and 7,000 combatants in Iraq and Syria.