With regard to the so-called “Petruhhin doctrine” developed by the Court of Justice of the European Union, the principle according to which the requested State is obliged to inform the State of nationality, in order to allow the latter to issue, in turn, a European Arrest Warrant for the purpose of prosecuting the same acts, can only operate within the phase specifically devoted to the substantive examination of the extradition request, and cannot therefore be extended to the provisional detention phase, which is instead the subject of the present proceedings.