The lawyer didn't know the case until after criminal detention.

1. According to Article 33 of the Lawyers Law, the entrusted lawyer has the right to meet the criminal suspect and the defendant with the lawyer's practice certificate, law firm certificate, power of attorney or 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 to learn about the relevant cases. Lawyers meet with criminal suspects and defendants without being monitored. "So, it is not necessary to go through any formalities just to understand this law, but it is actually very difficult and not that simple.

2. When it comes to restrictions, it is nothing more than rule 15 1 of the rules of procedure of the procuratorate. "For cases that do not involve state secrets, if a lawyer proposes to meet with the criminal suspect in custody, the people's procuratorate shall arrange a specific time for the meeting within 48 hours; For major and complicated cases involving more than two people, such as corruption and bribery, the specific time of the meeting can be arranged within five days. "

3, of course, you can directly understand the case, except those involving state secrets. You can convey your family's regards.

4. With regard to the definition of "the case", according to Article 154 of the Rules of Procedure of the Procuratorate, "if the content of the lawyer's inquiry about the criminal suspect in custody exceeds the authorized scope stipulated in Article 96 of the Criminal Procedure Law, or violates the regulations of the supervision place and relevant authorities on the meeting, the staff of the procuratorial organ present have the right to stop or suspend the meeting".

Article 96 "An entrusted lawyer has the right to know the charges charged by a criminal suspect from the investigation organ, and may meet with the criminal suspect in custody and obtain relevant information from the criminal suspect. When a lawyer meets a criminal suspect in custody, the investigation organ may send personnel to be present according to the circumstances and needs of the case. For cases involving state secrets, lawyers meeting with criminal suspects in custody shall be approved by the investigation organ. "

Moreover, every place will have some so-called "lawyer meeting regulations", so let's do it according to local regulations.