According to social media, Saudi security forces foiled an attack near the Al-Salam Palace in the coastal city, leaving one attacker and two royal guards dead.
Royal Guards killed the gunman, who was identified in the statement as 28-year-old Saudi national Mansour al-Amri. "He was immediately dealt with and his cowardly act also resulted in the martyrdom" of two guards, it added. An AK-47 and thee Molotov cocktails were found on his person after the attack, al-Arabiya reported.
Saudi authorities announced Thursday that they had dismantled a cell linked to the Daesh that was planning to destabilize the oil-rich kingdom. While the whereabouts of his son, Crown Prince Mohammed bin Salman, were unknwn, although recent state news reports have placed him in Jeddah.
The US embassy in Saudi Arabia sent out a tweet on Saturday warning citizens of a suspected attack in Jeddah, close to King Salman al-Saud's palace, who is now out of the country. Most attacks have targeted security forces and the country's Shiite minority.
Saudi Arabia is a member of the US-led worldwide coalition that has been battling Daesh in Syria and Iraq.