The UK has "urgently enquired" for information from Chinese and local officials after a British bookseller disappeared in Hong Kong, Foreign Secretary Philip Hammond has said.
UK passport holder Lee Bo, 65 - also known as Paul Lee - is one of five booksellers who have gone missing. All five men worked for a publisher known for books critical of China.
Activists fear they have been detained by Chinese officials. The Foreign Office said it was "deeply concerned".
The disappearances have sparked fury from lawmakers and activists in semi-autonomous Hong Kong, adding to growing unease that freedoms in the city are being eroded. Mr Lee is the latest bookseller to go missing, after raising the alarm about four of his colleagues at publishing house Mighty Current, who disappeared in October.
He disappeared last week and was last seen in Hong Kong. A letter faxed to his bookshop, apparently written by Mr Lee, says he travelled to China on his own and is fine, according to BBC. - Idrak