RIYADH, Dec 7: Two Saudi security personnel were killed and a few others injured when extremists opened fire on a guard post outside a prison in Jeddah on Thursday.

At 4:00pm (1300 GMT), one of the guard posts near the Ruwais prison in the governorate of Jeddah came under fire from a nearby building resulting in the martyrdom of two security personnel, said a statement from the Saudi Ministry of Interior.

A number of militants are believed to be held at the prison.

The incident coincided with a statement from the Saudi Ministry of Interior warning the extremists to surrender in a week. The names of those not surrendering would be listed among the wanted militants and issued to the press, it said.

Later on Thursday, security forces arrested two suspects after chasing down a vehicle they used to flee.