The Houthi rebel group has targeted multiple Saudi Arabian airports in the latest airstrikes between the two sides, as several Middle Eastern countries flock to the kingdom’s defense against the Yemeni terrorist group.

The Saudi General Authority of Civil Aviation confirmed that its King Abdullah bin Abdulaziz International Airport and its Najran International Airport were each hit in attacks on Monday night, though it did not directly name the Houthis as the party responsible. The government agency announced that three people sustained minor injuries and that the attacks also caused material damage at the airports.