British Air Force Typhoon jets have conducted a mission with France's air force in a coordinated attack on an underground arms cache in Syria used by the IS group, according to the UK Ministry of Defence.
The facility, identified by surveillance, was thought to be housing weapons and explosive materials, the release indicated, and was located in mountainous terrain just to the north of the historic site of Palmyra in central Syria.
"Our fighter planes used Paveway IV guided bombs to strike a number of entry passages providing entry to the facility... preliminary assessments are that the target was engaged successfully," officials stated.
There was no indication of any harm to civilians in the strike late on Saturday and all the aircraft returned safely, the MoD added.
The Typhoon fighters were supported by a Voyager aerial refuelling aircraft.
The Islamic State group - alternatively referred to as the so-called Islamic State - enforced extremist governance over parts of Syria and Iraq before its territorial defeat in 2019.
"This action underscores our UK leadership, and determination to work closely with allied nations, to eliminate any revival of the terrorist group and their harmful and extremist ideologies in the area," UK Defence Secretary the minister said.
RAF aircraft have performed surveillance missions over Syrian airspace to "forestall any efforts to regroup" of the group following its routing at the climactic battle in Baghuz in the year 2019, the authorities noted.
"I must thank every member of British forces participating in this operation for their professionalism and their courage," Healey added. "They were part of numerous British troops deployed over the holidays. This operation, to take out militants who pose a risk to our security, shows how UK forces are prepared to act, continuously, keeping Britain secure at home and strong abroad."
During December, the United States armed forces conducted what it called a "massive strike" against Islamic State objectives in Syria, subsequent to an ambush resulted in the deaths of two US troops and a civilian interpreter in the Palmyra area.
The U.N. says IS still boasts roughly 5-7 thousand militants in Iraq and Syria.
