PRC rounds up hunger strikers

``There has been no message from him and nobody has met with him, so I think he has been detained,'' Wan said.

"The reason [for his detention] may be related to the hunger strike. That's my estimation, but I don't know,'' Wan said.

Wan and Hu are founding members of the Aizhixing Institute of Health Education, a Beijing-based AIDS advocacy group.

Also missing is Qi Zhiyong (齊志勇), a Beijing pro-democracy activist who was crippled after being shot in the leg when army troops were sent in to end the Tiananmen protests, Gao said.

He said friends have not been able to find Qi since Feb. 15.