British Air Force Typhoon FGR4s have joined forces with French warplanes in a joint strike targeting an underground arms cache in Syrian territory used by the Daesh militant organization, as stated by the UK's MoD.
The site, pinpointed through reconnaissance, was assessed as housing weapons and explosive materials, the release indicated, and was situated in hills just above the ancient city of Palmyra in the heart of Syria.
"Our fighter planes used Paveway IV guided bombs to target a series of approach shafts leading to the facility... initial indications indicate the strike was effective," the ministry announced.
There was no evidence of any civilian casualties in the attack on Saturday evening and every plane involved made a safe return, the MoD added.
The British jets were backed up by a Voyager tanker plane.
IS - also known as the so-called Islamic State - enforced militant control over parts of both Syria and Iraq before its territorial defeat in 2019.
"This operation underscores British leadership, and commitment to operate in unison with our allies, to eradicate any resurgence of IS and their violent and radical beliefs in the region," the British Defence Secretary John Healey remarked.
UK warplanes have conducted surveillance missions over Syria to "prevent any efforts to regroup" of IS following its routing at the climactic battle in Baghuz in the year 2019, the authorities noted.
"I must thank all the members of our armed forces who took part in this mission for their skill and their bravery," he commented. "They were part of a great many UK service members on duty over Christmas and New Year. This mission, to eliminate terrorist threats who threaten our safety, highlights how British military are always on standby, continuously, ensuring Britain's security within its borders and influential overseas."
During December, the US military executed what it termed a "major assault" against IS targets in Syria, following an attack killed two American soldiers and a local interpreter in the Palmyra area.
The U.N. reports Islamic State still boasts an estimated 5,000 to 7,000 fighters in Iraq and Syria.
