Criminal cases refer to investigations, trials and trials conducted by the state in order to hold criminal suspects and defendants accountable for their criminal liability when they are accused of violating social relations protected by criminal law. Criminal sanctions cases. Criminal cases are established under the following circumstances, such as: homicide; injury cases; violent retaliation causing serious injuries; robbery; rape cases; explosion cases; water decision-making cases; poisoning cases; theft, etc. Paragraph 3 of Article 19 of the Criminal Procedure Law stipulates that private prosecution cases shall be directly accepted by the People's Court.