RAF Typhoon fighter aircraft have operated alongside France's air force in a joint strike against an underground arms cache in Syria employed by the Islamic State group (IS), per a report from the UK's MoD.
The location, pinpointed through reconnaissance, was thought to be housing weapons and explosive materials, the announcement noted, and was positioned in mountainous terrain just north of the historic site of Palmyra in central Syria.
"Our fighter planes utilized precision-guided Paveway IV munitions to strike a number of access tunnels down to the site... early reports are that the target was engaged successfully," the MoD said.
There was no indication of any civilian casualties in the operation late on Saturday and every plane involved returned safely, the MoD added.
The Typhoon FGR4s were backed up by a Voyager tanker plane.
Daesh - referred to as ISIS - enforced jihadist rule over parts of both Syria and Iraq until 2019.
"This strike shows the UK's leading role, and commitment to work closely with allied nations, to eliminate any resurgence of the terrorist group and their dangerous and violent ideologies in the region," the British Defence Secretary the minister said.
UK warplanes have carried out patrols over Syria to "forestall any attempted comeback" of the group following its defeat at the battle of Baghuz in 2019, the MoD reported.
"I must thank every member of our armed forces participating in this operation for their skill and their valour," Healey added. "They were among numerous British troops deployed over the festive period. This operation, to remove terrorist threats who pose a risk to our safety, shows how UK forces are always on standby, all year round, ensuring Britain's security domestically and powerful internationally."
Last December, the United States armed forces executed what it described as a "large-scale strike" on Daesh sites in Syria, following an attack killed two US troops and a civilian interpreter in Palmyra.
The U.N. says Islamic State still has roughly 5-7 thousand fighters in both countries.
