RAF Typhoon FGR4s have joined forces with France's air force in a joint strike targeting an hidden munitions depot in Syrian territory operated by the IS group, according to the UK's MoD.
The site, identified by surveillance, was believed to be housing weapons and explosive materials, the release indicated, and was positioned in hills just above Palmyra in the heart of Syria.
"The RAF jets utilized laser-guided Paveway IV weapons to hit a several entry passages leading to the site... preliminary assessments indicate the strike was effective," the MoD said.
There was no sign of any civilian impact in the attack on Saturday evening and all the aircraft made a safe return, the MoD added.
The Typhoon FGR4s were supported by a Voyager tanker plane.
The Islamic State group - alternatively referred to as ISIS - enforced jihadist rule over significant areas in Iraq and Syria prior to its 2019 collapse.
"This operation demonstrates the UK's leading role, and commitment to work closely with our partners, to eliminate any revival of Daesh and their harmful and extremist ideologies in the area," UK Defence Secretary the minister remarked.
UK warplanes have conducted patrols over Syria to "deter any attempted comeback" of IS following its military defeat at the battle of Baghuz in 2019, the MoD reported.
"I want to thank all the members of our armed forces involved in this operation for their professionalism and their valour," Healey added. "Including them were numerous British personnel on duty over Christmas and New Year. This mission, to eliminate terrorist threats who endanger our safety, highlights how our armed forces are prepared to act, continuously, protecting the UK at home and influential overseas."
In December, the US military conducted what it called a "major assault" targeting Daesh sites in Syria, after an attack killed two US servicemembers and a civilian interpreter in Palmyra.
The U.N. reports Daesh still has roughly 5-7 thousand fighters in both countries.
