Flames are seen at a building belonging to Aramco in Dhahran after it was struck. (AFP pic)RIYADH: Yemen's Houthis said Wednesday they had targeted facilities belonging to Saudi Aramco, after Saudi officials reported a strike on a building in an area housing the energy giant's operations centre.

Powerful explosions meanwhile rattled the Saudi capital, as the coalition fighting the Houthis said it had intercepted a missile fired by the Iran-backed group towards Riyadh.

Saudi Arabia, the world's top crude oil exporter, has in recent days come under sustained attack in a dramatic escalation in the war with the Houthis.

It has hit back with strikes against the group's stronghold in the Yemeni capital Sanaa, which for years has been under their grip.