Watch: Smoke over Riyadh airport after Houthi's major attack on Saudi Arabia

Smoke rose near King Khalid International Airport in Riyadh after Yemen's Houthi rebels launched a large-scale attack on Saudi Arabia on Saturday. Two explosions were heard in the capital, while some flights were delayed.The Houthis said they targeted "sensitive targets" in Riyadh and a Saudi Aramco facility in Yanbu. The group said it used ballistic and cruise missiles and drones in the attacks.Saudi air defences later said they had intercepted and destroyed a Houthi ballistic missile targeting Riyadh.Smoke seen near airportVideos showed a plume of smoke rising near King Khalid International Airport after the second explosion.Saudi authorities had earlier issued an aerial threat alert for Riyadh. They later announced that the danger had passed.