GENERAL PART
Section One : GENERAL PROVISIONS
CHAPTER 1. LEGISLATION ON CRIMINAL PROCEDURE
Article 4. Effect of the Criminal-Procedure Law in the Course of Time
1. Proceedings in a criminal case shall be governed by the criminal-procedure law applicable at the time of inquest, preliminary investigation, or trial, respectively.
2. Any criminal-procedure law, which eliminates or limits the rights conferred upon the participants of proceedings or disparages their situation, shall not have retrospective effect, i.e., it shall not apply to any proceedings initiated before the effective date of such a law.
3. Admissibility of evidence shall be determined in accordance with the law applicable at the time the given evidence was obtained.
EDIT.