RAF Typhoon jets have joined forces with France's air force in a combined operation against an underground arms cache in Syria used by the IS group, as stated by the UK Ministry of Defence.
The facility, pinpointed through surveillance, was believed to be storing arms and explosives, the release indicated, and was situated in mountains just north of the ancient city of Palmyra in Syria's central region.
"The RAF jets employed Paveway IV guided bombs to strike a number of access tunnels down to the facility... early reports are that the strike was effective," officials stated.
There was no indication of any civilian casualties in the strike on Saturday evening and all the aircraft made a safe return, the MoD added.
The Typhoon FGR4s were assisted by a Voyager refuelling tanker.
IS - alternatively referred to as ISIS - enforced extremist governance over parts of Iraq and Syria before its territorial defeat in 2019.
"This action shows British leadership, and commitment to operate in unison with allied nations, to stamp out any resurgence of the terrorist group and their harmful and extremist ideologies in the Middle East," UK Defence Secretary John Healey stated.
RAF aircraft have conducted patrols over Syria to "forestall any attempted comeback" of Islamic State subsequent to its routing at the Baghuz confrontation in 2019, the MoD reported.
"I want to thank the personnel of the UK armed forces involved in this mission for their skill and their courage," he said. "They were part of a great many British troops stationed over the holidays. This mission, to remove militants who pose a risk to our security, shows how our armed forces are ready to step up, continuously, ensuring Britain's security at home and influential overseas."
Last December, the US military conducted what it described as a "large-scale strike" against IS targets in Syria, subsequent to an ambush killed two US troops and a local interpreter in the Palmyra area.
The United Nations estimates Daesh still boasts roughly 5-7 thousand fighters in both countries.
