Question juridique clé
Whether the refusal to grant access to the criminal file violated the right to be heard.
Solution extraite
The appellant had sufficient information from related mutual-assistance materials to understand the suspicions and defend himself; only general file access could be restricted.
Motifs extraits
The right to consult the file may be limited for investigative secrecy and collusion risks, provided essential information is disclosed. Here the reasons for the freeze were sufficiently known, so the defense rights were respected.