BULGARIA - PENAL PROCEDURE CODE
Part two. EVIDENCING
Chapter fourteen. METHODS OF EVIDENCING
Section II. Interrogation
Art. 142. (1) Where the accused does not speak Bulgarian, an interpreter shall be appointed.
(2) Persons referred to in Art. 148, Para 1, items 1 – 3 shall not act as interpreters.
(3) In case of non-appearance or refusal to perform the task assigned, the interpreter shall be liable as provided under Art. 149, Para 5.
(4) Where the accused is deaf or dumb, an interpreter of information shall be appointed.
(5) The provisions of Para 2 and 3 shall apply accordingly to the interpreters of information.
Language
Fair trial standards
Rights during investigation - access to interpreter and translation if questioned in other language
EDIT.