A loud explosion was reported at the airport in Riyadh, Saudi Arabia, triggering a full evacuation of the facility, according to Reuters and AFP citing witnesses. Saudi authorities have not yet issued an official statement regarding the incident. However, two regional officials have indicated that the airport was targeted in an attack and is currently closed. The nature of the explosion and any potential casualties remain unknown at this time. The incident raises security concerns surrounding critical infrastructure in Saudi Arabia. Further details are pending official confirmation from Saudi officials. The airport in Riyadh remains shut down as investigations proceed.