Question juridique clé
Whether the Federal Supreme Court could hear the prosecutor's appeal against the detention-extension order as a last cantonal decision
Solution extraite
No. Because the prosecutor had to be able to participate in the cantonal appeal stage under the unity of proceedings, the challenged order was not a final cantonal decision within the meaning of Art. 80 BGG.
Motifs extraits
Art. 222 StPO may not be read to exclude the prosecutor from the cantonal remedy against detention decisions. Under Art. 111 BGG and the principle of double instance, anyone entitled to appeal to the Federal Supreme Court must have party status in all cantonal instances. A contrary reading would create procedural inconsistencies and undermine effective justice.