The suspension of operations at King Khalid International Airport in Riyadh has been extended, the Saudi General Authority of Civil Aviation (GACA) said Monday.In a statement, GACA added that the move comes as part of finalizing the essential procedures to verify the safety of the airport's facilities and their operational readiness in lockstep with the appropriate authorities.Over the past few days, the Houthi group has targeted the airport and its facilities, resulting in several casualties and material damage.