How do I know that the investigation has been filed?

Legal analysis: First of all, whether a criminal case is filed can't be inquired online, because criminal cases are confidential, only the intranet of the Public Security Bureau can inquire, and individuals can't use the intranet of the Public Security Bureau. However, according to the "Regulations on the Procedures of Public Security Organs Handling Criminal Cases"

Article 271 stipulates that the wanted order and the notice of reward should be widely posted and published through radio, television, newspapers and computer networks, and criminals wanted on the Internet can check online.

Legal basis: According to the regulations of public security organs on handling criminal cases.

Article 162 stipulates: "After accepting a case, the public security organ, after examination, thinks that the criminal facts that need to be investigated for criminal responsibility belong to its own jurisdiction, and the unit that accepts the case shall submit a criminal filing report and file the case with the approval of the person in charge of the public security organ at or above the county level." According to this, the public security organ will issue a formal legal document, but the document is accompanied by archival information and will be transferred with it. Therefore, individuals generally do not receive a decision to file a case. Therefore, if you want to know whether to file a criminal case, you can contact the public security, procuratorate and court undertaker yourself to understand the progress of the case. However, this method is not feasible. It is more efficient and feasible to entrust lawyers to communicate with the case-handling organs, and there are online inquiry channels for lawyers in some areas. Lawyers can check the progress of cases online after passing the professional qualification certification. According to the procedural provisions of public security organs in handling criminal cases

Article 162 After accepting a case, if a public security organ thinks that there are criminal facts that need to be investigated for criminal responsibility and it belongs to its own jurisdiction, it shall make a criminal filing report by the unit accepting the case and file the case with the approval of the person in charge of the public security organ at or above the county level. Procedures for handling criminal cases by public security organs

Article 271 A wanted order and a notice of reward shall be widely published, and may be published through radio, television, newspapers and computer networks.