Key legal question
Whether the appeal against the detention order remained live after the appellant left Switzerland.
Extracted holding
The appeal had become moot because the procedure ended when the appellant departed Switzerland.
Extracted reasoning
Under Art. 242 CPC, when proceedings end for other reasons without a decision on the merits, the case is removed from the roll. Since Z.________ left Switzerland on 2012-05-29, there was no longer a live dispute.