LONDON, United Kingdom (AFP) — Britain and France on Sunday said they had carried out joint strikes on the Islamic State (IS) group in Syria to prevent the extremists resurging.

France said it was part of Operation Inherent Resolve, a United States-led international offensive against IS in Iraq, Syria and also Libya.

The British Ministry of Defense said it cooperated with France on Saturday night to strike an underground facility in Syria.

“This facility had been occupied by Daesh, most likely to store weapons and explosives. The area around the facility is devoid of any civilian habitation,” the statement added.