Legal analysis: Yes. Generally, all the prisoners in detention centers are undecided criminals, that is, those who have been sentenced, and they are usually thrown into prison, that is, serving their sentences in prison. Of course, there are still some people with short remaining sentences (generally less than three months) who will serve the remaining sentences in the detention center. Other query methods are: 1. Go to the household registration and ask him where he was detained at the police station, which was found on the identity information network; 2. Go to the police station to find the undertaker and ask about the progress of the case.
Legal basis: Article 28 of the Regulations of People's Republic of China (PRC) Detention Center, with the consent of the case-handling organ and the approval of the public security organ, criminals can communicate and meet with their close relatives during their detention.
"Regulations of People's Republic of China (PRC) Detention Center" Article 32 If the people's procuratorate decides to initiate a public prosecution, the prisoner in custody may meet and correspond with the defender entrusted by him or the defender designated by the people's court after receiving a copy of the indictment.