LAW on the Implementation of the Statute of the International Criminal Court and the Prosecution of Crimes against International Law of War and Humanitarian Law
V COOPERATION WITH INTERNATIONAL CRIMINAL COURT
Article 26
The International Criminal Court and the Prosecutor may perform individual activities in the territory of the Republic of Croatia with the prior consent of the Government of the Republic of Croatia.
Direct execution of requests on State territory
ICC privileges and immunities
Unique provision - cooperation
Execution of requests for assistance (under Articles 93 and 96) in accordance with national law
EDIT.