Home2001 Treaties and Agreements ...European Police Office (01-1207) – Agreement to Enhance Cooperation in Preventing, Detecting, Suppressing, and Investigating Serious Forms of International Crime hide European Police Office (01-1207) – Agreement to Enhance Cooperation in Preventing, Detecting, Suppressing, and Investigating Serious Forms of International Crime TIAS Office of Treaty Affairs December 7, 2001 Law Enforcement: Judicial Assistance Cooperation Agreement signed at Brussels December 6, 2001; entered into force December 7, 2001. With annex. Supplemental agreement signed at Copenhagen December 20, 2002; entered into force December 21, 2002. With exchange of letters. Download Attachment [912 KB] Tags Law Enforcement Treaties