243 - Witnesses not to be excused from testifying.

§ 243. Witnesses  not  to be excused from testifying.  In any criminal  proceeding before a court or grand  jury  or  in  any  investigation  or  inquiry  before  the common council, or any committee thereof, or before  any officer conducting an investigation, touching the knowledge of  such  witness  as  to  any offense committed in violation of the provisions of  this chapter or ordinance of the city; the court or grand jury,  or  the  common  council, committee or officer, may confer immunity in accordance  with the provisions of section 50.20 or 190.40 of the criminal procedure  law; provided, however, that no immunity shall be conferred except  upon  twenty-four  hours  prior  written  notice  to  the appropriate district  attorney having an official interest therein.