British Air Force Typhoon fighter aircraft have operated alongside French aircraft in a combined operation against an subterranean weapons facility in Syrian territory employed by the Islamic State group (IS), according to the UK's MoD.
The location, located using reconnaissance, was believed to be containing munitions and bombs, the statement said, and was positioned in hills just above Palmyra in central Syria.
"Our fighter planes used laser-guided Paveway IV weapons to hit a series of entry passages providing entry to the site... early reports suggest the objective was successfully hit," the MoD said.
There was no indication of any civilian casualties in the operation conducted Saturday night and all the aircraft made a safe return, the MoD added.
The British jets were supported by a Voyager aerial refuelling aircraft.
IS - also known as ISIS - imposed militant control over significant areas in both Syria and Iraq prior to its 2019 collapse.
"This action shows the UK's leading role, and determination to stand shoulder to shoulder with allied nations, to eliminate any re-emergence of the terrorist group and their harmful and extremist ideologies in the area," UK Defence Secretary the minister remarked.
UK warplanes have carried out overwatch operations over Syrian airspace to "prevent any attempted resurgence" of the group subsequent to its military defeat at the battle of Baghuz in 2019, the authorities noted.
"I must thank every member of the UK armed forces who took part in this mission for their skill and their bravery," he added. "They were part of thousands of British troops stationed over the festive period. This mission, to take out terrorist threats who endanger our way of life, highlights how British military are prepared to act, continuously, keeping Britain secure domestically and influential overseas."
During December, the American forces conducted what it called a "large-scale strike" on IS targets in the country, after an attack claimed the lives of two US servicemembers and a civilian linguist in the Palmyra area.
The UN estimates Daesh still maintains between 5,000 and 7,000 fighters in Syria and Iraq.
