Cognizable vs Non-Cognizable Investigation (Ss. 155–156)
- Section 155(1): When information of a non-cognizable offence is given, the officer shall enter it in a book and refer it to the Magistrate.
- Section 155(2): A case combining cognizable and non-cognizable offences is treated as a cognizable case, and the investigation of the case does not require any sanction of the Magistrate.
- Section 156(2): The Magistrate may order investigation after examining the complainant in a private complaint.
- Section 156(3): Investigation against a woman accused in an offence of Zina shall be conducted by a police officer not below the rank of Superintendent of Police.
- Section 156-B: Deals with investigation against a woman accused of an offence of Zina.
- Section 497 & 498 restriction: No police officer shall investigate an offence under these sections except upon a complaint made by the husband of the woman (Both sections).