The arrests come as authorities crackdown on dissent in the semi-autonomous Chinese city.
City and special administrative region of China
Hong Kong, officially the Hong Kong Special Administrative Region of the People's Republic of China (HKSAR), is a city and special administrative region of China on the eastern Pearl River Delta in South China. With over 7.5 million residents of various nationalities in a 1,104-square-kilometre (426 sq mi) territory, Hong Kong is one of the most densely populated places in the world. Hong Kong is also one of the most developed cities in the world, with the most expensive housing.