RAF Typhoon fighter aircraft have operated alongside French aircraft in a combined operation on an underground arms cache in Syrian territory used by the Daesh militant organization, according to the UK's MoD.
The site, pinpointed through reconnaissance, was believed to be housing weapons and explosive materials, the release indicated, and was located in mountainous terrain just to the north of the ancient city of Palmyra in the heart of Syria.
"Our aircraft employed laser-guided Paveway IV weapons to target a series of access tunnels leading to the depot... initial indications indicate the objective was successfully hit," the ministry announced.
There was no sign of any harm to civilians in the operation late on Saturday and all the aircraft made a safe return, the MoD added.
The British jets were supported by a Voyager refuelling tanker.
The Islamic State group - also known as the so-called Islamic State - enforced jihadist rule over significant areas in Syria and Iraq prior to its 2019 collapse.
"This operation demonstrates our UK leadership, and commitment to stand shoulder to shoulder with our allies, to stamp out any revival of IS and their harmful and extremist ideologies in the area," UK Defence Secretary the minister stated.
RAF aircraft have performed overwatch operations over Syrian airspace to "forestall any attempted comeback" of IS following its defeat at the Baghuz confrontation in the year 2019, the authorities noted.
"I want to thank the personnel of British forces who took part in this mission for their expertise and their courage," he added. "They were among thousands of British troops stationed over the festive period. This mission, to take out terrorist threats who threaten our security, highlights how UK forces are always on standby, throughout the year, keeping Britain secure domestically and influential overseas."
In December, the American forces conducted what it termed a "major assault" targeting Islamic State objectives in the country, subsequent to an attack resulted in the deaths of two US troops and a local interpreter in the Palmyra area.
The UN says Islamic State still has an estimated 5,000 to 7,000 fighters in both countries.
