Extradition and European Arrest Warrant Act
Chapter three - EXTRADITION PROCEDURE
Title I - Extradition at the request of another state
Article 21
(1) In the event of refusal to extradite the Minister of Justice shall notify the requesting state.
(2) Where the act is triable before a Bulgarian court, the materials shall be made available to the respective prosecutor for the purposes of prosecution, where grounds exist to this effect.
(3) A refusal to extradite a foreign national against whom charges have been pressed or who has been convicted in another state shall not be an obstacle to prosecution within the Republic of Bulgaria where grounds exist to this effect.
Refusal of ICC request
Obligation to inform the Court of reasons for denial of assistance
EDIT.