RAF Typhoon jets have operated alongside France's air force in a combined operation against an underground arms cache in Syria employed by the IS group, as stated by the UK's MoD.
The facility, pinpointed through intelligence, was thought to be storing arms and explosives, the statement said, and was located in mountains just above the ancient city of Palmyra in Syria's central region.
"The RAF jets utilized laser-guided Paveway IV weapons to hit a several access tunnels leading to the site... preliminary assessments suggest the strike was effective," officials stated.
There was no sign of any civilian casualties in the attack conducted Saturday night and every plane involved returned safely, the defence officials confirmed.
The Typhoon FGR4s were assisted by a Voyager tanker plane.
The Islamic State group - alternatively referred to as the so-called Islamic State - established militant control over parts of both Syria and Iraq prior to its 2019 collapse.
"This operation demonstrates our UK leadership, and resolve to operate in unison with allied nations, to eradicate any resurgence of Daesh and their violent and radical beliefs in the region," UK Defence Secretary the minister remarked.
RAF aircraft have conducted patrols over Syria to "deter any attempted resurgence" of the group after its military defeat at the climactic battle in Baghuz in 2019, the MoD reported.
"I extend gratitude to every member of British forces involved in this operation for their professionalism and their valour," the Defence Secretary commented. "Including them were numerous British troops deployed over the festive period. This mission, to eliminate terrorist threats who endanger our way of life, demonstrates how British military are prepared to act, all year round, protecting the UK at home and strong abroad."
Last December, the United States armed forces executed what it called a "massive strike" on IS targets in Syria, following an attack claimed the lives of two US troops and a local interpreter in the Palmyra area.
The United Nations says IS still maintains an estimated 5,000 to 7,000 fighters in both countries.
