Where are the three non-foreigners held by the Immigration Bureau?

The Immigration Bureau detained three non-foreigners in the immigration detention center. Immigration detention of foreigners is mainly due to illegal detention, illegal entry and illegal residence of foreigners in China. These acts violate China's entry and exit regulations and are illegal. Immigration detention center is a place set up by immigration bureau to solve foreigners' illegal acts, which is mainly responsible for detaining, reviewing and repatriating foreigners. In the detention center, foreigners will go through identification, entry and exit procedures, repatriation and other procedures. The detention center will manage foreigners according to law to ensure that the legitimate rights and interests of foreigners are protected.