Judgment of the Court (First Chamber) of 11 September 2025.#Ministerio Fiscal v MSIG.#Reference for a preliminary ruling – Convention implementing the Schengen Agreement – Article 54 – Article 50 of the Charter of Fundamental Rights of the European Union – Principle ne bis in idem – Concept of ‘same acts’ – Member of a terrorist association found guilty, in a Member State, of involvement in that association with a view to preparing an act of terrorism – Prosecution in another Member State for the same terrorist acts.#Case C-802/23.