Taipei, Aug. 9 -- A Taiwanese citizen who has lived and worked as a teacher in China for more than 10 years has reportedly been detained since May, raising concerns that the case could be connected to the person's religious beliefs, The Taipei Times reported.

Straits Exchange Foundation (SEF) Secretary-General Luo Wen-jia disclosed the case during a recent media briefing. The Taipei Times said Luo presented the incident as part of Taiwan's broader efforts to warn citizens about the growing risks of travelling to China, particularly after Beijing introduced the Law on Promoting Ethnic Unity and Progress in July.

Luo did not reveal the detainee's identity or other personal information, saying the details should remain private. The individ...