44In that regard, it is clear from the Court’s case-law that the ne bis in idem principle in Article 54 of the CISA is intended, on the one hand, to ensure, in the area of freedom, security and justice, that a person whose trial has been finally disposed of is not prosecuted in several Contracting States for the same acts on account of his having exercised his right to freedom of movement, the aim being to ensure legal certainty — in the absence of harmonisation or approximation of the criminal laws of the Member States — through respect for decisions of public bodies which have become final (see, to that effect, judgments of 28 September 2006 in Gasparini and Others, C‑467/04, EU:C:2006:610, paragraph 27; 22 December 2008 in Turanský, C‑491/07, EU:C:2008:768, paragraph 41; and 27 May 2014 in Spasic, C‑129/14 PPU, EU:C:2014:586, paragraph 77).
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