Question juridique clé
Whether the improper participation of the French investigating magistrate required annulment of the closing decision.
Solution extraite
The procedural irregularity was acknowledged, but it did not warrant annulment because no irreparable prejudice was shown and the feared risk was not substantiated.
Motifs extraits
A foreign magistrate may only participate on request and by a duly notified incidental decision, but an appeal against such participation would require irreparable prejudice. The written undertaking not to use information prematurely eliminated any such risk.