①If it is necessary for carrying out a seizure or seizure with a recording order, an immigration control officer may, specifying the necessary electronic or magnetic records among the electronic or magnetic records of the source, destination, date and time and other communication history of telecommunications that are 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 facilities for telecommunications for the communications of others, or a person who has installed facilities for telecommunications capable of intermediating the communications of unspecified or a large number of persons for their own business, not to erase those records. In this case, if the officer comes to find that there is no need to carry out a seizure or seizure with a recording order with regard to the electronic or magnetic records, the officer must withdraw the request.

②The period for which a request not to erase is made pursuant to the provisions of the preceding paragraph may, if particularly necessary, be extended within a range not exceeding 30 days; provided, however, that the total period for which the request not to erase is made may not exceed 60 days.

③In making a request pursuant to the provisions of paragraph (1), if necessary, a request may be made that matters concerning the request not be divulged without good reason.