Royal Air Force Typhoon fighter aircraft have joined forces with French aircraft in a joint strike on an subterranean weapons facility in Syrian territory used by the Daesh militant organization, as stated by the UK Ministry of Defence.
The site, identified by surveillance, was assessed as containing munitions and bombs, the statement said, and was located in mountainous terrain just above Palmyra in central Syria.
"Our aircraft employed Paveway IV guided bombs to strike a series of access tunnels down to the depot... initial indications are that the objective was successfully hit," the MoD said.
There was no sign of any civilian casualties in the operation conducted Saturday night and every plane involved made a safe return, the defence officials confirmed.
The British jets were supported by a Voyager refuelling tanker.
The Islamic State group - referred to as the so-called Islamic State - enforced extremist governance over parts of Syria and Iraq until 2019.
"This strike underscores our UK leadership, and resolve to work closely with allied nations, to eliminate any resurgence of IS and their harmful and extremist ideologies in the area," UK Defence Secretary the Defence Secretary remarked.
RAF aircraft have conducted surveillance missions over Syria to "deter any efforts to regroup" of the group subsequent to its military defeat at the battle of Baghuz in 2019, the MoD reported.
"I want to thank the personnel of British forces who took part in this mission for their skill and their courage," the Defence Secretary added. "Including them were numerous UK service members deployed over the holidays. This mission, to take out terrorist threats who threaten our safety, demonstrates how UK forces are always on standby, throughout the year, ensuring Britain's security domestically and influential overseas."
During December, the American forces conducted what it termed a "massive strike" on IS targets in the country, subsequent to an attack killed two US troops and a civilian interpreter in Palmyra.
The U.N. reports Daesh still maintains an estimated 5,000 to 7,000 fighters in Iraq and Syria.