How do families in criminal detention know the case?

Legal analysis: The ways for families of criminal detainees to know the case are: 1, and directly seek the police handling the case. 2. Family members entrust lawyers, and lawyers know the case from the police or meet the parties to understand the case. And according to the relevant laws and regulations, within 24 hours after criminal detention, if there are no special circumstances or other circumstances specified by law, the family members of the criminal suspect must be informed of the time, place and address of detention and the suspected crime.

Legal basis: Article 85 of the Criminal Procedure Law of People's Republic of China (PRC). When a public security organ detains a person, it must produce a detention permit. After detention, the detained person shall be immediately sent to the detention center for custody, and shall not exceed twenty-four hours. Unless it is impossible to notify or the notification of suspected crimes endangering national security or terrorist activities may hinder the investigation, the family members of the detained person shall be notified within 24 hours after detention. After the circumstances that hinder the investigation disappear, the family members of the detained person shall be notified immediately.

Article 93 When arresting a person, the public security organ must produce an arrest warrant. After the arrest, the arrested person shall be immediately sent to the detention center for custody. Unless it is impossible to notify, the family of the arrested person shall be notified within 24 hours after the arrest.