The most efficient is the exchange of information and information related to the implementation of search operations through international police cooperation. International police co-operation is achieved through the exchange of information and information between the competent police agencies of two or more states through international police co-operation organizations, which act at the request of another state in accordance with national and international legal regulations. . Depending on the legal framework, we distinguish between universal, regional and bilateral international police cooperation. The Police of the Republic of Croatia accesses international police cooperation through all forms of international police cooperation and uses the INTERPOL channel for the exchange of information, and through the EUROPOL channel and the Schengen Information System (SIS) as a member of the European Union. CHEESE. The purpose of this paper is to explain the activities of the investigation, ie to show the similarities, differences, advantages and disadvantages of universal and regional international requirements as one of the main tools of international police cooperation through existing and used demand instruments. police cooperation. With many similarities and differences, the activity of search and seizure through the INTERPOL channel and the Schengen Information System is a common goal, so the competent judicial authorities can fulfill the purpose of punishment as a precondition. for the functioning of each state.