Section 1607. Prosecutions and immunity

(a) The  attorney  general may prosecute every person charged with the
  commission of a criminal offense  arising  from  the  violation  of  any
  provision of this article. In all such proceedings, the attorney general
  may  appear in person or by his deputy before any court of record or any
  grand jury and exercise all the powers and perform  all  the  duties  in
  respect of such actions or proceedings which the district attorney would
  otherwise  be  authorized  or  required  to  exercise or perform; or the
  attorney general may in his  discretion  transmit  evidence,  proof  and
  information as to such offense to the district attorney of the county or
  counties in which the alleged violation has occurred, and every district
  attorney  to whom such evidence, proof and information is so transmitted
  shall  forthwith  proceed  to  prosecute   any   corporation,   company,
  association, or officer, manager or agent thereof, or any firm or person
  charged  with  such  violation.  In  any  such  proceeding,  wherein the
  attorney general has  appeared  either  in  person  or  by  deputy,  the
  district  attorney  shall  only  exercise  such  powers and perform such
  duties as are required of him by the  attorney  general  or  the  deputy
  attorney general so appearing.
    (b) Upon  any  investigation before the attorney general or his deputy
  or other officer designated by him, or in any criminal proceeding before
  any court, magistrate or grand jury, pursuant to or for a  violation  of
  any  of the provisions of this article, the attorney general, his deputy
  or other officer designated by him, or the court,  magistrate  or  grand
  jury,  may  confer immunity in accordance with the provisions of section
  50.20 of the criminal procedure law.