South China Morning Post, June 23, 2011
http://www.scmp.com/portal/site/SCMP/menuitem.2af62ecb329d3d7733492d9253a0a0a0/?vgnextoid=1766dc3b5f7b0310VgnVCM100000360a0a0aRCRD
Related information:
Direct Elections Advocate Yao Lifa Missing
直选活跃人士姚立法失踪
HRIC Bulletin, June 22, 2011
EN: http://www.hrichina.org/content/5394
CH: http://www.hrichina.org/cn/content/5395