The competent authorities to recognize an EIO for a hearing, issued by a competent authority of another Member State, are :
1. in the pre-trial proceedings - a prosecutor from the respective district or military-district prosecutor's office within whose judicial region the relevant investigative measure is requested to be carried out or evidence which is already in possession is requested to be transferred;
2. in the court proceedings or in case the EIO is issued by an administrative authority - the respective district or military court within whose judicial region the judicial investigation measure concerned is requested to be carried out or evidence which is already in possession is requested to be transferred.
When the EIO has been sent to a body, which is not competent to recognize it, it shall send it ex officio to the respective competent authority and shall immediately notify the issuing body thereof in a manner allowing written certification of the authenticity of the receipt and of its content.
The competent authorities to recognize an MLA request for a hearing – in cases where the EU MLA Convention 2000 applies, are the respective local District/Regional Courts and District/Regional Prosecution offices – with regards of the stage of criminal proceedings.
The competent authorities to recognize an MLA request for a hearing – in cases where the CoE European Convention on Mutual Assistance in Criminal Matters applies, are as follows:
-in the pre-trial proceedings - the Supreme Cassation Prosecutor's Office of the Republic of Bulgaria;
-in the trial proceedings - the Ministry of Justice of the Republic of Bulgaria.