Saudi Arabia's state security chief issued a statement Monday revealing the identity of the four terrorists who attacked the al-Zulfi intelligence center north of Riyadh yesterday.

The State Security Presidency revealed that the four attackers on al-Zulfi's interrogation took a break from the planning of their operation, and found explosive belts, sporadic weapons, bombs and materials used to manufacture explosives.

The four attackers wearing explosive belts at the time of the operation were Abdullah al-Hamoud, Abdullah Ibrahim al-Mansur, Samer Abdul Aziz al-Madid and Salman Abdulaziz al-Madid, all of whom belonged to the Da'ash organization.

Saudi Arabia's state security chief also announced the arrest of a terrorist cell of 13 members of the al-Qaeda organization who planned to carry out terrorist attacks.