Royal Air Force Typhoon FGR4s have joined forces with France's air force in a joint strike targeting an subterranean weapons facility in Syria used by the IS group, per a report from the UK's MoD.
The site, located using surveillance, was thought to be containing munitions and bombs, the release indicated, and was situated in hills just above the ancient city of Palmyra in central Syria.
"Our aircraft employed laser-guided Paveway IV weapons to hit a series of approach shafts leading to the site... initial indications suggest the objective was successfully hit," the ministry announced.
There was no sign of any civilian impact in the operation on Saturday evening and each participating jet made a safe return, the defence officials confirmed.
The Typhoon FGR4s were assisted by a Voyager refuelling tanker.
Daesh - also known as the so-called Islamic State - enforced jihadist rule over significant areas in Syria and Iraq before its territorial defeat in 2019.
"This operation demonstrates British leadership, and determination to stand shoulder to shoulder with our partners, to stamp out any resurgence of Daesh and their violent and radical beliefs in the Middle East," the British Defence Secretary John Healey stated.
RAF aircraft have conducted patrols over Syrian airspace to "forestall any attempted comeback" of IS after its routing at the battle of Baghuz in 2019, the MoD reported.
"I extend gratitude to all the members of British forces involved in this operation for their skill and their valour," he added. "Including them were numerous British personnel stationed over Christmas and New Year. This action, to take out terrorist threats who threaten our way of life, shows how UK forces are prepared to act, throughout the year, ensuring Britain's security within its borders and influential overseas."
Last December, the US military conducted what it described as a "major assault" on Daesh sites in Syria, following an ambush resulted in the deaths of two US servicemembers and a local interpreter in Palmyra.
The United Nations estimates IS still has between 5,000 and 7,000 fighters in Iraq and Syria.
