RAF Typhoon fighter aircraft have operated alongside France's air force in a combined operation targeting an hidden munitions depot in Syria used by the Islamic State group (IS), according to the UK's MoD.
The facility, pinpointed through surveillance, was thought to be storing arms and explosives, the release indicated, and was positioned in hills just north of Palmyra in central Syria.
"The RAF jets used laser-guided Paveway IV weapons to target a series of access tunnels down to the site... early reports indicate the strike was effective," the MoD said.
There was no evidence of any civilian casualties in the operation on Saturday evening and every plane involved made a safe return, the ministry further stated.
The Typhoon FGR4s were supported by a Voyager aerial refuelling aircraft.
Daesh - referred to as the so-called Islamic State - established jihadist rule over significant areas in Iraq and Syria before its territorial defeat in 2019.
"This operation demonstrates the UK's leading role, and determination to stand shoulder to shoulder with our partners, to stamp out any revival of the terrorist group and their harmful and extremist ideologies in the region," Britain's Defence Chief the minister said.
RAF aircraft have conducted surveillance missions over Syrian airspace to "prevent any efforts to regroup" of Islamic State subsequent to its military defeat at the climactic battle in Baghuz in the year 2019, the authorities noted.
"I must thank every member of the UK armed forces participating in this mission for their professionalism and their bravery," he commented. "They were part of thousands of UK service members stationed over the festive period. This action, to eliminate terrorist threats who pose a risk to our way of life, demonstrates how our armed forces are always on standby, continuously, keeping Britain secure within its borders and strong abroad."
Last December, the US military conducted what it called a "massive strike" against Daesh sites in Syria, after an attack resulted in the deaths of two US servicemembers and a civilian linguist in Palmyra.
The UN reports Daesh still maintains an estimated 5,000 to 7,000 fighters in Iraq and Syria.
