Facts

This case concerns an administrative law appeal filed by X. against an order of the Indictment Chamber of the canton of Geneva. The dispute concerns the validity of a search and seizure ordered by a Geneva investigating judge on the territory of the canton of Basel-City.

The canton of Geneva was designated as the leading canton by the Federal Office of Police in the context of an international judicial assistance procedure. The appellant considers that the Geneva authorities were not authorized to carry out investigative acts on the territory of Basel without going through the Basel prosecution authorities, in accordance with the principle of territoriality.

Considerations

The Federal Tribunal dismisses the appeal. It considers that the provisions of the Concordat on Judicial Assistance and Inter-Cantonal Cooperation in Criminal Matters of November 5, 1992 are part of the "forms provided for by Swiss legislation" within the meaning of the European Convention on Mutual Assistance in Criminal Matters. The Concordat authorizes the judicial authorities of one canton to order and carry out procedural acts directly in another canton, by applying their own procedural law.

Although international assistance falls under administrative law, its implementation involves the application of…