From Reuters, Dec. 8:

Gunmen killed two security officers when they opened fire on a guard post outside a prison in Jidda, the Interior Ministry said. Residents said terror suspects were believed to be held at the prison. Al Arabiya television quoted a security official as saying that two suspects were arrested after a car chase. The kingdom said last week that it had detained 136 suspected militants, including a would-be suicide bomber. Prince Nayef bin Abdul Aziz, the interior minister, said Monday that the militants, who included foreigners, were planning a series of suicide bombings and assassinations.

See our last post on jihadi violence in Saudi Arabia.