Supplementing an earlier statement on security forces' chasing of a car of two persons belonging to the deviant group and the consequent death of one them and the injury of the other in one of Riyadh's residential districts, an official source at the Ministry of Interior said that early today, the security forces that searched the area came under fire from a car ridden by a person who threw highly explosive grenade, lightly injuring four security men. The security forces at the scene chased the car and exchanged fire with its driver, killing him instantly. Meanwhile, security forces in Jeddah province arrested a person suspected of belonging to the deviant group after he was injured because he resisted the security forces and tried to flee. Investigation is still under way. Another supplementary statement will be issued later to explain the details.