The report was published last Tuesday by a non-governmental organization, and it seems really terrifying, especially since these police stations are not only located in poor countries that the Chinese government can influence, but they are also located in major countries that have troubled relations with China, which is what Assures that it operates in complete secrecy.
Link to the original report:
https://safeguarddefenders.com/en/110-overseasThe report mentions that these centers were established to prosecute Chinese criminals abroad. It mentions that tens of thousands of Chinese citizens have been arrested based on these secret centers, but it does not mention details about the arrests, how they were carried out, and whether there were deportations carried out.
The Chinese government had issued a denial of the information contained in the report, but I think someone will believe it because the report was detailed and clear.
https://www.vanguardngr.com/2022/10/china-opens-police-station-in-nigeria/On the other hand, these developments can be read from a political point of view due to the Cold War between China and the United States due to the crisis on the island of Taiwan, in addition to China's pro-Russian invasion and support for Russia.