For the validation of a provisional arrest, the issiung of a Interpol red notice by the requesting State, indicating the custodial measure restricting personal liberty, is enough. Accordingly, at this stage, it is not necessary for the extradition request to have already been formally submitted by the foreign State, since even a mere Interpol notice suffices, as it constitutes a request aimed at the adoption of a precautionary measure pending the transmission of the extradition request.