RAF Typhoon fighter aircraft have conducted a mission with French warplanes in a combined operation on an underground arms cache in Syrian territory employed by the IS group, as stated by the UK's MoD.
The location, located using intelligence, was assessed as containing munitions and bombs, the release indicated, and was situated in mountains just to the north of the historic site of Palmyra in Syria's central region.
"Our aircraft employed Paveway IV guided bombs to strike a series of entry passages down to the site... preliminary assessments are that the target was engaged successfully," the MoD said.
There was no sign of any civilian casualties in the attack late on Saturday and every plane involved returned to base without incident, the MoD added.
The Typhoon FGR4s were supported by a Voyager refuelling tanker.
The Islamic State group - referred to as ISIS - imposed extremist governance over parts of Iraq and Syria until 2019.
"This strike demonstrates our UK leadership, and determination to operate in unison with our partners, to eliminate any resurgence of the terrorist group and their harmful and extremist ideologies in the Middle East," UK Defence Secretary the minister remarked.
UK warplanes have performed patrols over Syria to "prevent any efforts to regroup" of the group following its military defeat at the battle of Baghuz in 2019, the MoD reported.
"I must thank the personnel of the UK armed forces involved in this strike for their skill and their bravery," he said. "Including them were numerous British personnel deployed over the festive period. This operation, to eliminate terrorist threats who endanger our way of life, shows how UK forces are always on standby, continuously, keeping Britain secure at home and powerful internationally."
In December, the United States armed forces conducted what it described as a "large-scale strike" against Islamic State objectives in the country, following an assault resulted in the deaths of two US servicemembers and a civilian interpreter in the Palmyra area.
The U.N. estimates IS still maintains roughly 5-7 thousand fighters in both countries.
