He said those with slight injuries from the two blasts Wednesday against the interior ministry and a special forces camp in Riyadh have been discharged from hospital, while four are still being treated for moderate injuries.
Al-Eqtissadiyah reported that a Pakistani driver and a Saudi security man were killed and some 90 wounded in the bombings, which sent a clear signal that Islamist militants were still capable of attack despite a massive crackdown by the authorities.
The ministry said six guards were wounded in the attack on its offices along with several bystanders, and that foreigners were among the wounded in the second explosion at the special forces base.
Ministry spokesman Mansur al-Turki said both attacks appeared to have been suicide operations.
Saudi security forces killed 10 suspected al Qaeda militants in two days of clashes in the capital, including a Yemeni thought to be the group's leader in the country, officials said Thursday.
Two people on the country's most-wanted list were also killed in the shootouts.
Friday's statement said six security men were slightly wounded in the shootout that killed seven militants just an hour after the car bombings.
The other three militants were killed in a firefight that began late Tuesday and continued overnight.
Suspected al Qaeda fighters have killed more than 100 people and wounded hundreds more in Saudi Arabia since launching their attacks, many of which have targeted foreigners, in May 2003.