OSAKA -- Osaka police searched two Universal Studios Japan offices Friday in connection with the unauthorized use and storage of explosives at the Hollywood theme park.

A senior official in charge of explosives for theme park operator USJ Co. has admitted to police that he instructed subordinates to disregard the laws governing explosives in order to give the attractions a bigger impact, according to sources.

Police plan to send his case and that of USJ Co. to prosecutors on suspicion of violating the Explosives Control Law, the sources said. Police believe the misuse of explosives was habitual, despite knowledge that it was illegal.