British Air Force Typhoon jets have operated alongside French warplanes in a joint strike against an underground arms cache in Syria used by the IS group, per a report from the British defence ministry.
The location, pinpointed through surveillance, was believed to be storing arms and explosives, the statement said, and was positioned in hills just to the north of the historic site of Palmyra in central Syria.
"The RAF jets utilized laser-guided Paveway IV weapons to strike a several approach shafts down to the site... early reports indicate the strike was effective," the ministry announced.
There was no indication of any civilian casualties in the operation conducted Saturday night and every plane involved returned safely, the defence officials confirmed.
The Typhoon fighters were backed up by a Voyager aerial refuelling aircraft.
Daesh - alternatively referred to as Daesh - enforced militant control over parts of both Syria and Iraq prior to its 2019 collapse.
"This operation shows British leadership, and resolve to operate in unison with our partners, to eradicate any re-emergence of Daesh and their dangerous and violent ideologies in the area," the British Defence Secretary John Healey stated.
RAF aircraft have conducted patrols over Syria to "prevent any attempted comeback" of Islamic State after its defeat at the Baghuz confrontation in 2019, the MoD reported.
"I want to thank the personnel of British forces involved in this operation for their professionalism and their bravery," the Defence Secretary added. "They were among a great many British personnel on duty over the holidays. This action, to eliminate militants who endanger our security, demonstrates how British military are prepared to act, continuously, ensuring Britain's security domestically and influential overseas."
Last December, the US military executed what it termed a "large-scale strike" targeting Daesh sites in the country, subsequent to an attack killed two US troops and a civilian linguist in the Palmyra area.
The UN estimates Islamic State still has an estimated 5,000 to 7,000 fighters in both countries.
