Key legal question
Whether the cantonal appeal against the maintained seizure after delegation of prosecution was admissible
Extracted holding
The cantonal authority lacked competence to rule on the seizure once the prosecution had been delegated abroad; the appeal was therefore inadmissible.
Extracted reasoning
The delegation under the EIMP places prosecution measures under the foreign authorities, while the Swiss authority can no longer decide on the fate of the conservative seizures during the foreign proceedings.