A huge plume of smoke and fire has been seen rising near an Aramco facility in Riyadh. It comes as hostilities escalate between Saudi Arabia and Yemen's Iran-aligned Houthis, who have stepped up attacks on Saudi cities and energy infrastructure. There has been no immediate confirmation from Saudi authorities about the fire, and Aramco hasn't yet responded to requests for comment. #Aramco #SaudiArabia #Channel4News #C4News