Section 2(1)(k) in The Mental Healthcare Act, 2017
(k)"local authority" means a Municipal Corporation or Municipal Council, or Zilla Parishad, or Nagar Panchayat, or Panchayat, by whatever name called, and includes such other authority or body having administrative control over the mental health establishment or empowered under any law for the time being in force, to function as a local authority in any city or town or village;