Lian Yi-Zheng, Missing Booksellers, Hidden Dragon,. New York Times, Jan 21, 2016 (op-ed).
My comment:
(a) After Mr LI bo's disappearance: "Concern deepened after the mainstream Hong Kong newspaper Ming Pao reported that the local police were in possession of footage from surveillance cameras at the book warehouse showing Mr. Lee being shadowed by strangers as he walks into an elevator. A witness claims to have seen him being forced into a car by several men and driven off."