Mutual cooperation provides for exchange of data and undertaking of certain tasks on request from other state bodies , all towards the prevention of criminal acts . Also the Indirect Tax Administration - the RS Customs Administration cooperate with customs services abroad based on bilateral agreements ( Croatia , Serbia , Monte Negro , Macedonia and Turkey ) and on the multilateral Agreement on Cooperation on Prevention and Fight against Cross Border Crime in SEEE ( SECI Agreement : Albania , Bulgaria , Greece , Hungary , Macedonia , Moldova , Croatia , Turkey , Romania and Slovenia ) .