Key legal question
Whether the appeal was admissible despite the appellant's release and lack of current practical interest in a declaratory finding on detention unlawfulness.
Extracted holding
No exceptional interest justified a declaratory appeal; the appellant could raise the unlawfulness issue in the pending merits proceedings before the competent trial authority.
Extracted reasoning
After release, a practical and current interest generally disappears. Unlike cases involving alleged ill-treatment or irreparable rights, here the question was purely legal and could be examined shortly in the ordinary penal proceedings, where full review would be available.