I BASIC PROVISIONS
Ne Bis In Idem Principles and Prohibition of Concurrent Proceedings
Article 8
In the Republic of Serbia criminal proceedings shall not be instituted or conducted against the same accused person for the same criminal offence if the proceedings for said criminal offence are already ongoing before the International Criminal Court, having been instituted prior to the criminal proceeding in the Republic of Serbia.
Ne bis in idem - State's own court
EDIT.