Westerners killed in Saudi Arabia

From BBC

Reports say six western expatriates have been killed by gunmen in the city of Yanbu in Saudi Arabia.
The US embassy said it had received reports that a US citizen was among the dead. At least one Briton was feared dead, according to the British embassy.

My local radio station is quoting a the chairman of a large corporation saying as many as 17 are dead.

From CNN

An informed source said two of the militants were killed when they detonated the car bomb; a third was shot and killed by Saudi authorities; and the fourth was shot and wounded by authorities and arrested.

From Fox News

Gunmen opened fire Saturday at an oil refinery co-owned by Exxon Mobil (search) and the Saudi company SABIC (search) in northwestern Saudi Arabia, killing at least three Americans, two Britons, an Australian and a Saudi, company officials and diplomats said

Still too early to tell exactly what happened.