480_36 interference 36. Internal Security Agency (Agencja Bezpieczeństwa Wewnętrznego) under a prosecutor’s supervision. A part of the investigation file is classified and accessible to the applicant’s lawyers upon authorisation, in the secret registry on the premises of the domestic courts or public prosecutor’s office (kancelaria tajna). Copying the documents which comprise the classified file is not permitted. Notes can be taken by the lawyers. They cannot be taken away and must be stored in the so-called secret file register (zbiór dokumentów). The investigation file comprises 170 volumes of both classified and non-classified materials.