L118/12 Official Journal of the European Union 14.5.2003 (Acts adopted pursuant to Title VI of the Treaty on European Union) COUNCIL DECISION 2003/335/JHA of 8 May 2003 on the investigation and prosecution of genocide, crimes against humanity and war crimes THE COUNCIL OF THE EUROPEAN UNION, Having regard to the Treaty on European Union, and in parti- cular Articles 30, 31 and 34(2)(c) thereof, Having regard to the initiative of the Kingdom of Denmark (!), Having regard to the opinion of the European Parliament (), Whereas: (1)  The International Criminal Tribunals for the former Yugoslavia and for Rwanda have since 1995 been inves- tigating, prosecuting and bringing to justice violations of international law in connection with war, genocide and crimes against humanity. (2)  The Rome Statute of the International Criminal Court of 17 July 1998, which has been ratified by all Member States of the European Union, affirms that the most serious crimes of concern to the international commu- nity as a whole, in particular genocide, crimes against humanity and war crimes, must not go unpunished and that their effective prosecution must be ensured by taking measures at national level and by enhancing inter- national cooperation. (3)  The Rome Statute recalls that it is the duty of every State to exercise its criminal jurisdiction over those respon- sible for such international crimes. (4)  The Rome Statute emphasises that the International Criminal Court established under it is to be complemen- tary to national criminal jurisdictions. Effective investiga- tion and, as appropriate, prosecution of genocide, crimes against humanity and war crimes should be ensured without interference with the jurisdiction of the Interna- tional Criminal Court. (5)  The investigation and prosecution of, and exchange of information on, genocide, crimes against humanity and war crimes is to remain the responsibility of national authorities, except as affected by international law. () 0] C 223, 19.9.2002, p. 19. (*) Opinion of 17 December 2002 (not yet published in the Official Journal). (6) (11) Member States are being confronted on a regular basis with persons who were involved in such crimes and who are trying to enter and reside in the European Union. The competent authorities of the Member States are to ensure that, where they receive information that a person who has applied for a residence permit is suspected of having committed or participated in the commission of genocide, crimes against humanity or war crimes, the relevant acts may be investigated, and, where justified, prosecuted in accordance with national law. The relevant national law enforcement and immigration authorities, although having separate tasks and responsi- bilities, should cooperate very closely in order to enable effective investigation and prosecution of such crimes by the competent authorities that have jurisdiction at national level. Member States should ensure that law enforcement authorities and immigration authorities have the appro- priate resources and structures to enable their effective cooperation and the effective investigation and, as appropriate, prosecution of genocide, crimes against humanity and war crimes. The successful outcome of effective investigation and prosecution of such crimes also requires close coopera- tion at transnational level between authorities of the States Parties to the Rome Statute, including the Member States. On 13 June 2002, the Council adopted Decision 2002/ 494/JHA setting up a European network of contact points in respect of persons responsible for genocide, crimes against humanity and war crimes (°). Member States should ensure that full use is made of the contact points to facilitate cooperation between the competent international authorities. () OJL 167, 26.6.2002, p. 1.