British Air Force Typhoon jets have conducted a mission with France's air force in a combined operation on an hidden munitions depot in Syrian territory used by the IS group, according to the British defence ministry.
The facility, identified by intelligence, was believed to be containing munitions and bombs, the statement said, and was positioned in hills just above the ancient city of Palmyra in Syria's central region.
"Our aircraft used precision-guided Paveway IV munitions to hit a number of access tunnels providing entry to the site... preliminary assessments are that the target was engaged successfully," the ministry announced.
There was no indication of any harm to civilians in the attack late on Saturday and all the aircraft returned safely, the defence officials confirmed.
The Typhoon FGR4s were backed up by a Voyager tanker plane.
The Islamic State group - also known as the so-called Islamic State - established extremist governance over large swathes of Syria and Iraq before its territorial defeat in 2019.
"This action underscores the UK's leading role, and commitment to operate in unison with our partners, to eradicate any re-emergence of IS and their violent and radical beliefs in the area," the British Defence Secretary John Healey stated.
UK warplanes have conducted surveillance missions over Syrian airspace to "prevent any efforts to regroup" of Islamic State after its military defeat at the battle of Baghuz in 2019, the MoD reported.
"I extend gratitude to all the members of the UK armed forces involved in this operation for their skill and their bravery," the Defence Secretary added. "Including them were numerous UK service members deployed over the holidays. This mission, to eliminate dangerous terrorists who threaten our security, highlights how British military are ready to step up, all year round, protecting the UK at home and powerful internationally."
During December, the American forces executed what it described as a "large-scale strike" targeting IS targets in Syria, after an assault killed two US servicemembers and a civilian linguist in Palmyra.
The United Nations estimates Daesh still maintains roughly 5-7 thousand combatants in Syria and Iraq.
