legal ground
Article 78 of the Public Security Administration Punishment Law
After accepting reports, complaints, reports and surrenders, public security organs shall immediately investigate violations of public security management; If it is considered that it is not a violation of public security administration, it shall inform the informant, the complainant, the informant and the person who surrendered himself, and explain the reasons.
Article 79 of the Public Security Administration Punishment Law
The investigation of public security cases by public security organs and their people's police shall be conducted according to law. It is strictly forbidden to extort confessions by torture or collect evidence by threats, enticements, deception and other illegal means. Evidence collected by illegal means shall not be used as the basis for punishment.
skill
The above answer is only for the current information combined with my understanding of the law, please refer carefully!
If you still have questions about this issue, I suggest you sort out relevant information and communicate with professionals in detail.