How can the police station and the public security bureau inform everyone of anything?

When the case-handling organ contacts citizens by telephone, text message, etc., it is usually the witness who asks for assistance in the investigation. Mainly to find someone to talk to and understand the relevant situation. It is impossible to directly ask citizens to transfer property protection or pay any fines and fees by phone or SMS. Anyone who makes such a request is suspected of fraud.

Public security or procuratorial organs and other case-handling organs will inevitably introduce their own units, their names and the basic reasons for talking to people when notifying witnesses of telephone conversations, and ask you to assist in the investigation according to law. If citizens are required to pay fines or transfer property, they must show their work permits and law enforcement certificates on the spot, and must show relevant legal documents, and more than two staff members must be present.

Relevant provisions of the Criminal Procedure Law

1. Article 122 Investigators may question the witness on the spot, or they may go to the unit or residence where the witness is located or the place where the witness is presented. When necessary, the witness may be notified to testify in a people's procuratorate or a public security organ. When questioning witnesses on the spot, they should show their work certificates, and when questioning witnesses at their units, residences or places proposed by witnesses, they should show their certificates from people's procuratorates or public security organs.

The questioning of witnesses should be conducted separately.

2. Article 123 When interrogating a witness, the witness shall be informed of his legal responsibility to provide evidence and testimony truthfully and to intentionally commit perjury or conceal criminal evidence.