PRINCE NAIF BIN ABDULAZIZ, MINISTER OF INTERIOR, TONIGHT PATRONIZED THE GRADUATION CEREMONY OF A NUMBER OF QUALIFYING TRAINING COURSES FOR PUBLIC SECURITY TRAINEES AND THE OPENING CEREMONY OF THE FIRST SECURITY EXHIBITION FOR PUBLIC SECURITY. AT THE VENUE, HE WAS RECEIVED BY PRINCE MOHAMMED BIN NAIF BIN ABDULAZIZ, ASSISTANT MINISTER OF INTERIOR FOR SECURITY AFFAIRS, AND SENIOR OFFICIALS.