Section 60 - Offenders competent witnesses; witnesses' immunity1. Every person offending against any of the provisions of the three preceding sections shall be a competent witness against any other person so offending, and may be compelled to appear and give evidence before any magistrate or grand jury or in any court in the same manner as other persons.2. In any criminal proceeding before any court or grand jury for a violation of any of the provisions of the three preceding sections, the court or grand jury may confer immunity in accordance with the provisions of section 50.20 or 190.40 of the criminal procedure law.