Questione giuridica chiave
Whether the prosecutor's appeal against the refusal of surveillance approval was admissible and how it should be classified.
Decisione estratta
The filing is treated as a criminal-law appeal and is admissible in principle against approval or refusal of communication surveillance orders.
Motivazione estratta
The Supreme Court held that it reviews admissibility ex officio and that the prosecutor has standing; the decision causes irreparable harm and falls within the statutory exception to the double-instance requirement.