CrPC/BNSS : The Code of Criminal Procedure (CrPC), enacted in 1973 and effective from 1 April 1974, served as the primary law governing the procedural aspects of criminal law in India. It outlines processes for criminal investigation, apprehension of suspects, evidence collection, trial proceedings, punishment, and preventive measures related to public nuisance and maintenance of dependents.

On 11 August 2023, a Bill to replace the CrPC with the Bharatiya Nagarik Suraksha Sanhita (BNSS) was introduced in the Lok Sabha. The CrPC was officially replaced by the BNSS on 26 December 2023, signaling a significant change in India's criminal procedural framework.