When the public security organ carries out detention, it must show the detention certificate and order the detained person to sign (seal) the detention certificate and press the fingerprint. Refuse to sign (seal) or fingerprint, the person who executes the detention shall indicate it. If the detainee resists detention, the executor has the right to use coercive methods, including the use of restraints; After detention, the organ that decides to detain shall notify the family of the detained person or his unit within 24 hours of the reasons and place of detention, unless there are circumstances that hinder the investigation or cannot be notified.