CHAPTER II PROTECTION OF FUNDAMENTAL HUMAN RICHTS FREEDOMS
12. Right to fair trial, etc.
(5) No person who shows that he has been tried by a competent court for a criminal offence and either convicted or acquitted shall be tried again for that offence or for any other criminal offence of which he could have a been convicted at the trial for that offence, save upon the order of a superior court in the course of appeal or review proceedings relating to the conviction or acquittal.
EDIT.