Directive 2014/41/EU regarding the European Investigation Order in criminal matters. It is applicable in relation to the Member States, which have also implemented the EIO Directive. For the countries, which have not implemented the EIO Directive so far, the following legal framework is applicable: European Convention on Mutual Assistance in Criminal Matters of April 20, 1959 and its first and second Additional Protocol of 1978 and 2001 respectively. Convention on Mutual Assistance in Criminal Matters between the Member States of the European union of May 29, 2000.