Saudi Aramco operates a 400,000-barrel-per-day refinery in Jizan, part of a new economic city on the Red Sea.

Al-Masirah said the Houthis had also launched an attack with the same model of drone on the airport of Abha in neighboring Asir province.

Oil prices are trading up on the news, with Brent topping $72 at 11:52am EST.

Some are also indicating that President Trumps tweets about shooting missiles in Syria is another reason for the increase in oil prices.