Four people play a key role in our criminal justice system. These are the police, the Public Prosecutor, the defence lawyer and the judge. The part of the police begins with the lodging of an FIR in the police station. In court, the Public Prosecutor represents the interests of the State. Courts and accompanying prosecution and defence lawyers. Agencies for detaining and supervising offenders, such as prisons and probation agencies. The purpose of the Criminal Justice System is to deliver justice for all, by convicting and punishing the guilty and helping them to stop offending while protecting the innocent.