Lawyers can't check files after criminal cases are arrested. What can be learned from the investigation organ is only the accused crime and the place of detention. If a lawyer wants to know the case, he can know the case by meeting the suspect and then provide him with legal help. Article 40 of the Criminal Procedure Law stipulates that defense lawyers may consult, extract and copy the case files from the date when the people's procuratorate examines and prosecutes the case. Other defenders may also consult, extract and copy the above materials with the permission of the people's court or the people's procuratorate.
Legal objectivity:
Article 175 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 he thinks that there may be cases of collecting evidence by illegal means as stipulated in Article 56 of this Law, he 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.