Two Terrorists blew themselves up following a confrontation with security forces in Saudi Arabia's Jeddah on Saturday, Saudi media reported.
Two other terrorists were also killed in the clash.
Saudi security forces surrounded a house in Jeddah and exchanged fire with the men, who blew themselves up, reported Sabq.
UAE-based Sky News Arabia also reported the incident and ran a video of an explosion in Jeddah's easten Al-Harazat district.
The Saudi interior ministry had no immediate comment.
Islamic State has carried out a series of bombings and shootings in Saudi Arabia since mid-2014 that have killed scores of people.
Last year, a suicide bomber was killed and two people were wounded in a blast near the U.S. consulate in Jeddah, the first bombing in years to target foreigners in the kingdom.