Article 134Request for Preservation of Electronic or Magnetic Records of Communication History

①When it is necessary in order to carry out a seizure or a seizure with a recording order, the relevant officials may, specifying those that are necessary from among the electronic or magnetic records of the transmission source, destination, date and time of communication, and other communication history of telecommunications recorded in the course of business and setting a period not exceeding 30 days, request in writing a person engaged in the business of providing telecommunications facilities for the communications of others, or a person who has installed telecommunications facilities capable of intermediating the communications of an unspecified or large number of persons for that person's own business, not to erase them. In this case, if the relevant officials come to find that there is no need to carry out a seizure or a seizure with a recording order with regard to those electronic or magnetic records, they must withdraw that request.

②The period for which non-erasure is requested pursuant to the provisions of the preceding paragraph may, if particularly necessary, be extended within a period not exceeding 30 days; provided, however, that the period for which non-erasure is requested may not exceed 60 days in total.

③In making a request under the provisions of paragraph (1), if it is necessary, the person may be requested not to divulge matters concerning that request without good reason.