At least 12 people died and 309 were injured in an attack on the main airport in Riyadh, the capital of Saudi Arabia. Civil aviation authorities provided the casualty figures. Turkey's Anadolu Agency carried the news in its report. The targeted airport is the largest air gateway serving the Saudi capital. The attack took place the day before the figures were announced. Neither the method of the assault nor those behind it were spelled out in the initial account of the incident.