Opinion of Advocate General Mengozzi delivered on 20 March 2012$

Opinion of Advocate General Mengozzi delivered on 20 March 2012.#João Pedro Lopes Da Silva Jorge.#Reference for a preliminary ruling from the cour d’appel d’Amiens.#Police and judicial cooperation in criminal matters — Framework Decision 2002/584/JHA — European arrest warrant and surrender procedures between Member States — Article 4(6) — Ground for optional non-execution of the European arrest warrant — Implementation in national law — Arrested person is a national of the issuing Member State — European arrest warrant issued for the purposes of enforcing a custodial sentence — Legislation of a Member State restricting the power not to execute the European arrest warrant to cases where the requested persons are nationals of that State.#Case C‑42/11.