§ 4. Investigation of petitions.

Upon the filing of a petition for suspended sentence or parole, and provided the requirements and provisions of Chapter 76, of the Public Acts of 1931, have been complied with, said petition shall be referred to the parole officer herein provided for, and said parole officer shall, as soon as possible thereafter, make a full investigation of the averments of the petition, the circumstances, history, criminal record and the social, physical and mental condition of the petitioner, and shall file a written report, setting out in detail the result of said investigation. A copy of said written report shall be furnished each of the criminal judges and the district attorney general.

No petition for a suspended sentence or parole shall be considered by the court unless and until the provisions of Chapter 76, Public Acts of 1931, and the provisions of this Act, have been fully complied with, and unless and until the written report of the parole officer has been filed and copies furnished as hereinabove provided.