Jan. 4 (UPI) -- British and French aircraft conducted a joint strike on Saturday night on an underground facility in Syria used by ISIS to store weapons and explosives.

Royal Air Force Typhoons and a Voyager refueling tanker joined the French aircraft to strike the mountain facility north of Palmyra as part of ongoing patrols to prevent the terrorist group from resurging and regaining ground in Syria, Britain's Ministry of Defense said in a press release.

"This action shows our U.K. leadership, and determination to stand shoulder to shoulder with our allies, to stamp out any resurgence of [ISIS] and their dangerous and violent ideologies in the Middle East," John Healey, U.K. defense secretary, said in the release.

The Saturday evening strike targeted access tunnels into the facility using Paveway IV guided bombs, with the ministry noting that initial indications show the mission was successful as a more detailed assessment is conducted.

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