British Air Force Typhoon FGR4s have operated alongside French aircraft in a coordinated attack against an underground arms cache in Syria operated by the IS group, according to the British defence ministry.
The site, identified by reconnaissance, was believed to be housing weapons and explosive materials, the release indicated, and was positioned in hills just above the ancient city of Palmyra in the heart of Syria.
"Our fighter planes employed precision-guided Paveway IV munitions to strike a number of access tunnels providing entry to the site... early reports suggest the target was engaged successfully," the ministry announced.
There was no indication of any civilian impact in the operation conducted Saturday night and all the aircraft returned to base without incident, the defence officials confirmed.
The British jets were supported by a Voyager refuelling tanker.
The Islamic State group - alternatively referred to as Daesh - enforced jihadist rule over significant areas in both Syria and Iraq before its territorial defeat in 2019.
"This strike shows the UK's leading role, and commitment to work closely with our partners, to eliminate any resurgence of IS and their harmful and extremist ideologies in the region," the British Defence Secretary the minister remarked.
RAF aircraft have carried out overwatch operations over Syria to "forestall any efforts to regroup" of Islamic State after its defeat at the Baghuz confrontation in 2019, the ministry said.
"I extend gratitude to every member of British forces involved in this operation for their expertise and their courage," the Defence Secretary commented. "Including them were numerous UK service members deployed over Christmas and New Year. This mission, to eliminate terrorist threats who endanger our way of life, highlights how British military are always on standby, continuously, ensuring Britain's security domestically and influential overseas."
In December, the American forces conducted what it described as a "massive strike" on Islamic State objectives in the country, subsequent to an attack resulted in the deaths of two US troops and a local interpreter in Palmyra.
The U.N. reports IS still maintains roughly 5-7 thousand combatants in Syria and Iraq.
