RAF Typhoon FGR4s have joined forces with French aircraft in a coordinated attack on an underground arms cache in Syrian territory employed by the Daesh militant organization, according to the UK Ministry of Defence.
The site, pinpointed through surveillance, was assessed as storing arms and explosives, the statement said, and was positioned in mountains just above the ancient city of Palmyra in Syria's central region.
"Our aircraft used laser-guided Paveway IV weapons to hit a several entry passages providing entry to the depot... initial indications are that the strike was effective," the ministry announced.
There was no sign of any civilian casualties in the attack conducted Saturday night and all the aircraft returned to base without incident, the ministry further stated.
The British jets were supported by a Voyager refuelling tanker.
The Islamic State group - referred to as ISIS - enforced jihadist rule over significant areas in Syria and Iraq prior to its 2019 collapse.
"This strike shows the UK's leading role, and commitment to work closely with allied nations, to eradicate any revival of Daesh and their dangerous and violent ideologies in the region," Britain's Defence Chief the Defence Secretary said.
British military aircraft have conducted surveillance missions over Syria to "prevent any efforts to regroup" of Islamic State subsequent to its routing at the battle of Baghuz in 2019, the MoD reported.
"I extend gratitude to every member of the UK armed forces participating in this mission for their professionalism and their valour," he added. "They were part of thousands of UK service members deployed over Christmas and New Year. This mission, to remove terrorist threats who threaten our security, demonstrates how our armed forces are prepared to act, throughout the year, ensuring Britain's security domestically and strong abroad."
In December, the American forces conducted what it described as a "major assault" against IS targets in Syria, subsequent to an ambush resulted in the deaths of two American soldiers and a civilian interpreter in the Palmyra area.
The U.N. estimates IS still boasts between 5,000 and 7,000 militants in both countries.
