Article XXVIII (Freedom and Responsibility) […] (6) With the exception of extraordinary cases of legal remedy laid down in an Act, no one shall be prosecuted or convicted for a criminal offence for which he or she has already been finally acquitted or convicted in Hungary or, within the scope specified in an international treaty and a legal act of the European Union, in another State, as provided for by an Act.
Article 50 - Right not to be tried or punished twice in criminal proceedings for the same criminal offence