Question juridique clé
Admissibility and scope of review of the federal appeal against the cantonal seizure-opposition decision
Solution extraite
The appeal was admissible insofar as it was directed, in substance, against the maintenance of the seizure, but review was limited to constitutional violations.
Motifs extraits
The decision on seizure opposition is a provisional measure under Art. 98 LTF; only constitutional grievances may be raised and must be specifically motivated.