Gunmen opened fire today at an oil refinery co-owned by Exxon Mobil and the Saudi company SABIC in north-western Saudi Arabia, killing at least two Britons, three Americans, an Australian and a Saudi, company officials and diplomats said.

Two suspected terrorists, including a suicide bomber, were killed during an attack today in north-western Saudi Arabia, according to diplomats.

Fifteen Egyptians were killed and 34 injured when their passenger bus collided with a lorry today in north-western Saudi Arabia, an Egyptian diplomat said.