On Saturday morning, two Saudi Arabian guards were shot and killed and three more were wounded when an armed man in a Hyundai car, drove up to the gate of the royal Peace Palace (Al-Salam Palace) in Jeddah and began shooting, as reported in a statement made by the interior ministry.
The gunman has been identified as 28-year-old Saudi national Mansour al-Amri, who was killed by the Royal Guards.
According to local Saudi media, the incident took place at about 15:15 PM.
Thus far, no motive has been confirmed for the attack.
In a telephone conversation with al-Arabiya television, Mansour al-Turki, the Interior Ministry's spokesman, said that the gunman had no history of a criminal record or any other links to armed groups.
The latest incident occurred only a few days after Saudi police raided three locations in the capital Riyadh that were suspected to be connected to a "terror cell" with links to Daesh, the so-called Islamic State.
The raids led to two deaths and five arrests.
U.S. Embassy warns of the attack
The attack happened while Saudi Arabia's King Salman was out of the country on an official state visit to Russia.