Public security organs have the right to go to the police station to collect evidence. Lawyers entrust qualified units and individuals to collect evidence with lawyer's certificate, lawyer's investigation letter and power of attorney. Lawyers with evidence qualifications can go to the police station to collect evidence. There are many ways to obtain evidence, and lawyers and their units can entrust evidence according to the needs of the case. According to the relevant laws and regulations of the state, the entrusted lawyer has the right to meet the criminal suspect and the defendant with the lawyer's practice certificate, the law firm's certificate, the power of attorney or the legal aid letter from the day when the criminal suspect is interrogated for the first time by the investigation organ or compulsory measures are taken, so as to learn about the relevant cases.
legal ground
People's Republic of China (PRC) Lawyers Law
Article 32 A client may refuse his entrusted lawyer to continue to defend or represent him, and at the same time, he may entrust another lawyer to act as a defender or agent. After accepting the entrustment, a lawyer shall not refuse to defend or represent without justifiable reasons. However, if the entrusted matter is illegal, the client uses the services provided by the lawyer to engage in illegal activities, or the client deliberately conceals important facts related to the case, the lawyer has the right to refuse to defend or represent him. Article 33 A lawyer who acts as a defender has the right to meet a criminal suspect or defendant who is detained or under residential surveillance with a lawyer's practice certificate, a law firm certificate, a power of attorney or a power of attorney for legal aid in accordance with the provisions of the Criminal Procedure Law. Defense lawyers are not monitored when meeting with criminal suspects and defendants. Article 34 A lawyer who acts as a defender has the right to consult, extract and copy the case file from the date when the people's procuratorate examines and prosecutes the case. Article 35 An entrusted lawyer may, according to the needs of a case, apply to a people's procuratorate or a people's court to collect and obtain evidence, or apply to a people's court to notify witnesses to testify in court.
If a lawyer investigates and collects evidence by himself, he may, with the lawyer's practice certificate and the certificate of the law firm, investigate the legal affairs undertaken by the relevant units or individuals.
Criminal Procedure Law of the People's Republic of China
Article 36 From the date when the people's procuratorate examines and prosecutes a case, the defense lawyer may consult, extract and copy the litigation documents and technical appraisal materials of the case, and may meet and correspond with the criminal suspect in custody. Other defenders, with the permission of the People's Procuratorate, may also consult, extract and copy the above-mentioned materials, and meet and correspond with criminal suspects in custody. Since the people's court accepted the case, the defense lawyer can consult, extract and copy the materials of the alleged criminal facts in this case, and can meet and correspond with the defendant in custody. With the permission of the people's court, other defenders may also consult, extract and copy the above materials, and meet and correspond with the defendant in custody. Article 37 With the consent of witnesses or other relevant units and individuals, defense lawyers may collect materials related to this case from them, or apply to the people's procuratorate or the people's court to collect and obtain evidence, or apply to the people's court to notify witnesses to testify in court. With the permission of the people's procuratorate or the people's court, and with the consent of the victim or his close relatives or witnesses provided by the victim, the defense lawyer may collect materials related to the case from them.