If a party is detained in a detention center for drug crimes, it belongs to criminal detention.
Criminal detention must meet two conditions:
First, the object of detention is a flagrante delicto or a major suspect.
An active criminal refers to a person who is committing a crime, and a major suspect refers to a person who has evidence to prove that he is suspected of a major crime.
Second, it has one of the legal emergencies.
Regarding what is an emergency, Article 80 and Article 163 of the Criminal Procedure Law have different provisions on detention by public security organs and detention by people's procuratorates.