Section 60. Offenders competent witnesses; witnesses' immunity

1. 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.