The Communication Security and Surveillance Act Article 16

Upon commencing the communications surveillance, the enforcement authority should submit a monthly status report to the prosecutor, the judge who issued the interception warrant or the head of the authority overseeing national intelligence. The prosecutor, the judge who issued the interception warrant ex officio or the head of the authority overseeing national intelligence may also request that the enforcement authority submit reports at any time.The supervision over a communications surveillance operation as referred to in Article 5, or Article 6 shall be assumed by the prosecutorial agency during the investigation, or by the court during a trial. The supervision over the communications surveillance operation as referred to in Article 7 shall be assumed by the authority overseeing national intelligence. The authority will dispatch personnel to the setup organization or use electronic supervision devices, to supervise the enforcement of the communications surveillance. For cases under investigation, the court shall dispatch personnel to supervise the enforcement authority on a regular basis.