Royal Air Force Typhoon fighter aircraft have conducted a mission with French aircraft in a coordinated attack against an subterranean weapons facility in Syrian territory operated by the IS group, as stated by the UK's MoD.
The facility, identified by reconnaissance, was thought to be containing munitions and bombs, the release indicated, and was positioned in mountains just above the ancient city of Palmyra in Syria's central region.
"Our fighter planes used precision-guided Paveway IV munitions to strike a number of entry passages leading to the site... initial indications are that the objective was successfully hit," the MoD said.
There was no sign of any civilian casualties in the operation late on Saturday and every plane involved made a safe return, the defence officials confirmed.
The Typhoon FGR4s were assisted by a Voyager aerial refuelling aircraft.
Daesh - alternatively referred to as the so-called Islamic State - imposed jihadist rule over significant areas in both Syria and Iraq until 2019.
"This operation underscores British leadership, and commitment to work closely with our allies, to eliminate any revival of Daesh and their harmful and extremist ideologies in the Middle East," Britain's Defence Chief the minister said.
UK warplanes have conducted patrols over Syria to "forestall any attempted resurgence" of the group after its defeat at the climactic battle in Baghuz in 2019, the MoD reported.
"I must thank every member of British forces participating in this operation for their professionalism and their bravery," he added. "They were part of a great many British personnel stationed over Christmas and New Year. This action, to eliminate dangerous terrorists who endanger our way of life, highlights how British military are always on standby, all year round, ensuring Britain's security at home and strong abroad."
In December, the United States armed forces carried out what it called a "major assault" against Islamic State objectives in the country, subsequent to an assault killed two US troops and a local interpreter in the Palmyra area.
The U.N. says IS still maintains roughly 5-7 thousand militants in Syria and Iraq.
