British Air Force Typhoon jets have conducted a mission with French aircraft in a joint strike on an underground arms cache in Syria operated by the Daesh militant organization, per a report from the UK's MoD.
The facility, identified by intelligence, was thought to be storing arms and explosives, the statement said, and was located in hills just to the north of the historic site of Palmyra in Syria's central region.
"The RAF jets employed precision-guided Paveway IV munitions to target a series of access tunnels providing entry to the depot... preliminary assessments suggest the target was engaged successfully," officials stated.
There was no evidence of any civilian casualties in the operation conducted Saturday night and every plane involved returned safely, the ministry further stated.
The Typhoon fighters were supported by a Voyager refuelling tanker.
The Islamic State group - referred to as Daesh - imposed extremist governance over large swathes of Syria and Iraq until 2019.
"This action shows our UK leadership, and determination to stand shoulder to shoulder with allied nations, to eliminate any resurgence of IS and their harmful and extremist ideologies in the area," Britain's Defence Chief the Defence Secretary said.
RAF aircraft have conducted surveillance missions over Syria to "deter any efforts to regroup" of IS following its defeat at the Baghuz confrontation in the year 2019, the ministry said.
"I extend gratitude to every member of British forces who took part in this mission for their professionalism and their bravery," the Defence Secretary added. "They were part of a great many British troops on duty over the festive period. This mission, to remove militants who threaten our safety, shows how British military are prepared to act, continuously, ensuring Britain's security within its borders and strong abroad."
Last December, the United States armed forces executed what it described as a "major assault" against Daesh sites in Syria, after an ambush claimed the lives of two American soldiers and a local interpreter in the Palmyra area.
The United Nations estimates Islamic State still has roughly 5-7 thousand fighters in both countries.