Key legal question
Whether the appeal against security detention remained admissible after the appellant's release from custody.
Extracted holding
The appeal was not examined because the appellant no longer had an current practical interest, and no exception justified review after release.
Extracted reasoning
A live interest is required under Art. 81 BGG. Exceptions for post-release review apply only in narrowly defined situations, including sufficiently substantiated EMRK violations. The appellant's allegations under Arts. 3 and 5 EMRK were too general and did not meet the substantiation requirement.