British Air Force Typhoon jets have joined forces with French warplanes in a combined operation against an hidden munitions depot in Syria employed by the IS group, per a report from the UK Ministry of Defence.
The facility, identified by intelligence, was thought to be storing arms and explosives, the statement said, and was located in mountainous terrain just above the historic site of Palmyra in central Syria.
"Our aircraft utilized laser-guided Paveway IV weapons to strike a number of access tunnels providing entry to the facility... initial indications indicate the strike was effective," the ministry announced.
There was no indication of any civilian impact in the attack late on Saturday and every plane involved made a safe return, the defence officials confirmed.
The Typhoon FGR4s were supported by a Voyager refuelling tanker.
The Islamic State group - referred to as Daesh - imposed extremist governance over large swathes of Syria and Iraq until 2019.
"This action shows the UK's leading role, and commitment to operate in unison with our allies, to stamp out any revival of the terrorist group and their violent and radical beliefs in the Middle East," Britain's Defence Chief the minister stated.
British military aircraft have carried out overwatch operations over Syria to "forestall any attempted comeback" of Islamic State after its defeat at the climactic battle in Baghuz in 2019, the authorities noted.
"I want to thank every member of British forces who took part in this mission for their professionalism and their valour," the Defence Secretary said. "They were among a great many British personnel stationed over the festive period. This mission, to eliminate terrorist threats who endanger our security, demonstrates how British military are ready to step up, throughout the year, keeping Britain secure domestically and influential overseas."
In December, the US military carried out what it called a "major assault" against IS targets in the country, following an assault killed two US servicemembers and a civilian linguist in Palmyra.
The United Nations reports Daesh still has an estimated 5,000 to 7,000 militants in Iraq and Syria.