RAF Typhoon jets have operated alongside French warplanes in a combined operation against an underground arms cache in Syrian territory employed by the IS group, per a report from the British defence ministry.
The facility, located using surveillance, was assessed as containing munitions and bombs, the release indicated, and was located in mountains just above Palmyra in central Syria.
"Our fighter planes utilized Paveway IV guided bombs to strike a several access tunnels leading to the facility... early reports are that the strike was effective," officials stated.
There was no indication of any civilian casualties in the strike late on Saturday and every plane involved made a safe return, the MoD added.
The British jets were supported by a Voyager refuelling tanker.
IS - referred to as ISIS - imposed jihadist rule over parts of both Syria and Iraq before its territorial defeat in 2019.
"This action underscores our UK leadership, and determination to stand shoulder to shoulder with our partners, to stamp out any revival of IS and their violent and radical beliefs in the region," the British Defence Secretary John Healey stated.
UK warplanes have performed patrols over Syrian airspace to "deter any attempted resurgence" of the group subsequent to its military defeat at the Baghuz confrontation in 2019, the authorities noted.
"I want to thank all the members of British forces involved in this operation for their professionalism and their valour," the Defence Secretary said. "They were part of a great many British personnel deployed over Christmas and New Year. This mission, to take out terrorist threats who pose a risk to our safety, demonstrates how our armed forces are ready to step up, continuously, protecting the UK domestically and influential overseas."
In December, the US military carried out what it termed a "massive strike" against Daesh sites in the country, after an assault killed two US servicemembers and a local interpreter in the Palmyra area.
The U.N. estimates Islamic State still boasts an estimated 5,000 to 7,000 fighters in Syria and Iraq.
