Cognizance of offence

No Magistrate shall take cognizance of any offence under this Act except upon a report in writing made in that behalf by a Police Officer or on a complaint filed before him by any aggrieved person: Provided that nothing contained in this section shall affect the provisions of the Code of Criminal Procedure, 1898, in regard to the powers of certain Magistrates to take cognisance of offence upon their own knowledge.