British Air Force Typhoon fighter aircraft have conducted a mission with France's air force in a combined operation on an subterranean weapons facility in Syria employed by the IS group, according to the UK Ministry of Defence.
The facility, pinpointed through reconnaissance, was thought to be housing weapons and explosive materials, the statement said, and was positioned in hills just to the north of the ancient city of Palmyra in the heart of Syria.
"Our fighter planes used precision-guided Paveway IV munitions to strike a number of access tunnels leading to the site... preliminary assessments suggest the objective was successfully hit," the ministry announced.
There was no indication of any civilian casualties in the attack conducted Saturday night and all the aircraft returned safely, the MoD added.
The Typhoon FGR4s were supported by a Voyager aerial refuelling aircraft.
Daesh - referred to as ISIS - enforced jihadist rule over parts of Syria and Iraq prior to its 2019 collapse.
"This operation shows the UK's leading role, and determination to operate in unison with our allies, to eradicate any re-emergence of the terrorist group and their dangerous and violent ideologies in the area," Britain's Defence Chief the minister said.
RAF aircraft have carried out patrols over Syrian airspace to "prevent any attempted resurgence" of the group following its routing at the climactic battle in Baghuz in the year 2019, the MoD reported.
"I extend gratitude to every member of the UK armed forces who took part in this strike for their expertise and their valour," Healey said. "They were among thousands of UK service members on duty over the festive period. This operation, to take out dangerous terrorists who threaten our way of life, shows how our armed forces are always on standby, all year round, ensuring Britain's security within its borders and influential overseas."
During December, the US military executed what it called a "massive strike" targeting Islamic State objectives in the country, after an attack killed two US servicemembers and a civilian linguist in the Palmyra area.
The UN says Daesh still has an estimated 5,000 to 7,000 combatants in Iraq and Syria.
