Part I
GENERAL PROVISIONS
Chapter I
BASIC RULES
The official language in criminal proceeding and the right to use own language
Article 8
(7) If the proceeding is not conducted in the language of a person referred to in paragraph 4 of the present Article, interpretation shall be provided for anything that the person may state, or anyone else might state, as well as the translation of personal documents and other written evidence. The interpretation/translation shall be entrusted to a Court Interpreter.
(8) The person referred to in paragraph 4 of the present Article shall be advised of his rights regarding translation/interpretation, and the person may waive that right if he speaks and understands the official language of the proceedings. The records shall note that the advice has been given, as well as the statement of the participant.
Rights during investigation - access to interpreter and translation if questioned in other language
Rights during trial - interpretation and translation
EDIT.