What should the public security organs do if they hand over people to the procuratorate without sufficient evidence?

In criminal proceedings, the public security organ shall investigate and collect evidence on whether the suspect is guilty or not. Criminal suspects don't need to prove their innocence. If the procuratorate considers that the evidence of the public security organ is insufficient and returns it to the public security organ for supplementary investigation (not more than twice), and the criminal suspect cannot be found guilty after supplementary investigation by the public security organ, the presumption of innocence shall be implemented and the procuratorate shall make a decision not to prosecute. As a family member of the suspect, you can ignore it, and the procuratorate and the court will eventually have a result; You can also hire a lawyer for the criminal suspect, and the lawyer will participate in the proceedings.

Article 171 of the Criminal Procedure Law: When examining a case, the people's procuratorate may request the public security organ to provide evidence materials necessary for the trial; If it is believed that there may be cases of collecting evidence by illegal means as stipulated in Article 54 of this Law, it may be required to explain the legality of collecting evidence.

When examining a case, the people's procuratorate may return it to the public security organ for supplementary investigation or conduct its own investigation.

A case under supplementary investigation shall be completed within one month. Supplementary investigation is limited to two times. After the supplementary investigation is transferred to the people's procuratorate, the people's procuratorate recalculates the time limit for examination and prosecution.

If the people's procuratorate still believes that the evidence is insufficient and does not meet the conditions for prosecution in the case of the second supplementary investigation, it shall make a decision not to prosecute.

Article 173 If a criminal suspect has no criminal facts or is under any of the circumstances specified in Article 15 of this Law, the people's procuratorate shall make a decision not to prosecute.

If the circumstances of the crime are minor and it is not necessary to sentence or exempt from punishment according to the provisions of the Criminal Law, the people's procuratorate may make a decision not to prosecute.

In cases where the people's procuratorate decides not to prosecute, the property sealed up, detained or frozen during the investigation shall be released at the same time. If the plaintiff who is sorry needs to be given administrative punishment, administrative punishment or confiscation of his illegal income, the people's procuratorate shall put forward procuratorial opinions and transfer them to the relevant competent authorities for handling. The relevant competent authorities shall promptly notify the people's procuratorate of the results.