The public prosecutor shall notify the suspect under surveillance and third parties under surveillance in terms of Article 270 letter b of the reason for and form and duration of the surveillance operation on conclusion of the preliminary proceedings at the latest.
With the consent of the compulsory measures court, notice may be deferred or dispensed with if:
the findings are not used as evidence in court proceedings; and
deferring or dispensing with notice is necessary to protect overriding public or private interests.
Persons whose post or telecommunications have been under surveillance or who have used a postal address or telecommunications service that has been under surveillance may file an Article 393 appeal under Articles 393–397.199 The period for filing the appeal begins on receipt of the notice.