Hong Kong's Chief Executive has told Sky News the alleged abduction of a British bookseller from the territory would be unacceptable if proven, and that his government is placing "a great deal of emphasis" on the case.
CY Leung said Hong Kong police were investigating the disappearance of Lee Bo, who has been missing since 30 December.
Mr Lee is the fifth Hong Kong-based bookseller to vanish mysteriously in recent months in a case that raises serious questions about the protection of freedoms promised to the territory during its handover from British rule.
Local activists fear the men are being held by mainland Chinese security forces after publishing works critical of the Communist party leadership.
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