Hong Kong activists vow to lodge complaint with UN over missing booksellers
Alliance in Support of Patriotic Democratic Movements of China also plans march on Sunday to demand explanation from Beijing

Police yesterday stepped up the effort to search for one of the five missing booksellers by visiting the Causeway Bay bookstore and the Chai Wan warehouse where the missing co-owner was last seen.
The move, which was made after Causeway Bay Books’ and Mighty Current’s co-owner Lee Bo’s family filed the missing person’s report to the police on January 1 and their disappearance elevated to an international level with British and Taiwan political leaders speaking up on the issue over the past two days.
A few plain-clothed police officers were seen going to the bookstore yesterday afternoon. It is understood that an associate of the bookstore is assisting the police investigation.
The bookstore, which is frequented by mainland visitors for their books on political gossips and scandals that are banned across the border, remained closed to the public yesterday.
READ MORE: Hong Kong activists vow to lodge complaint with UN over missing booksellers
Separately, around 20 police tactical unit officers were making rounds outside the Chai Wan warehouse yesterday afternoon where Lee was last seen on December 30.