Kernrechtsfrage
Whether the appellant was denied sufficient access to the detention file and notice of the grounds for detention.
Extrahierter Entscheid
The available information on the suspected offense and detention grounds was sufficient; full file access was not yet required at that stage.
Extrahierte Begründung
Only the essential detention-relevant material had to be disclosed; further restrictions were justified by the ongoing investigation and collusion concerns, and the appellant had enough information to challenge the detention.