Houthi fighters on Sunday said they used drones and missiles to attack a military base in southern Saudi Arabia as renewed fighting with Yemen’s government forces forced growing numbers of civilians to flee.

The attack at the southern Sharurah base targeted “weapons depots and command and control centers that are managing the aggression against our nation and people,” Houthi military spokesman Yahya Saree wrote on X.

The date of the operation was not specified. Clashes have increased this week between the Iran-allied Houthis and Yemeni government forces, which are backed by Riyadh.

Sirens went off in the province on Saturday, according to the Saudi civil defense, which didn’t report casualties or damage.

The civil defense also said a projectile fell in al-Tawwal governorate near the border with Yemen along the Red Sea, injuring two people and damaging a mosque and several other buildings. The statement blamed the Houthis.