I. General Provisions
Article 5
Challenge of admissibility of proceedings before the International Criminal Court; deferral of proceedings to the International Criminal Court or an International Tribunal
(2) Admissibility shall be challenged where:
(a) the person has been sentenced for or found not guilty of an act by a Liechtenstein court in an enforceable judgement in respect of the act;
Admissibility challenge - ne bis in idem
EDIT.