British Air Force Typhoon FGR4s have conducted a mission with French aircraft in a combined operation against an underground arms cache in Syria used by the Daesh militant organization, per a report from the UK's MoD.
The location, pinpointed through intelligence, was assessed as containing munitions and bombs, the announcement noted, and was positioned in mountains just above the historic site of Palmyra in Syria's central region.
"The RAF jets used precision-guided Paveway IV munitions to hit a several approach shafts providing entry to the depot... preliminary assessments are that the objective was successfully hit," the ministry announced.
There was no indication of any civilian casualties in the attack late on Saturday and all the aircraft returned to base without incident, the MoD added.
The British jets were supported by a Voyager aerial refuelling aircraft.
The Islamic State group - alternatively referred to as ISIS - enforced extremist governance over large swathes of Syria and Iraq until 2019.
"This operation shows British leadership, and determination to operate in unison with our partners, to eliminate any re-emergence of IS and their harmful and extremist ideologies in the Middle East," the British Defence Secretary the minister said.
UK warplanes have conducted patrols over Syria to "forestall any attempted resurgence" of the group after its routing at the battle of Baghuz in 2019, the MoD reported.
"I want to thank all the members of the UK armed forces involved in this mission for their professionalism and their valour," the Defence Secretary commented. "They were among thousands of British personnel stationed over the festive period. This action, to eliminate terrorist threats who pose a risk to our safety, shows how British military are always on standby, continuously, keeping Britain secure at home and powerful internationally."
Last December, the United States armed forces carried out what it called a "major assault" targeting IS targets in Syria, after an assault killed two American soldiers and a civilian linguist in the Palmyra area.
The United Nations reports Islamic State still boasts roughly 5-7 thousand combatants in both countries.
