CCTV footage captures the moment a missile struck the King Khalid International Airport in Riyadh, Saudi Arabia. At least 13 people were killed and more than 300 were injured, many believed to be pilgrims heading towards Mecca for the Umrah pilgrimage. The attack was carried out by the Houthis, an armed Islamist group based in northern Yemen, as part of a series of strikes targeting facilities across Saudi Arabia. It is the fourth time in five days that the group struck the international airport in Riyadh. The Houthis and Saudis have been in conflict since 2015, when the kingdom entered Yemen's civil war on behalf of the government. Warning: this report contains distressing images. #SaudiArabia #Umrah #Houthis #Yemen #C4News