Yemen's Houthis vowed on Wednesday to press on with attacks on airports and oil facilities in Saudi Arabia, a day after a strike that sources said caused extensive damage to the headquarters of oil giant Saudi Aramco2223.SE.

The officials said the top three floors in a building used by top executives were damaged. One official said the office of the Aramco chief executive was among those hit.

The officials said the top three floors in a building used by top executives were damaged. One official said the office of the Aramco chief executive was among those hit.