Kretzinger TITJUR Opinion of Advocate General Sharpston delivered on 5 December 2006. # Criminal proceedings against Jürgen Kretzinger. # Reference for a preliminary ruling: Bundesgerichtshof - Germany. # Convention implementing the Schengen Agreement - Article 54 - Ne bis in idem principle - Notion of ‘same acts’- Contraband cigarettes - Importation into several Contracting States - Prosecution in different Contracting States - Notion of ‘enforcement’ of criminal penalties - Suspension of the execution of the sentence - Setting-off of brief periods of detention pending trial - European arrest warrant. # Case C-288/05.