HONG KONG (Reuters) - Hong Kong student protest leaders Joshua Wong and Lester Shum were arrested on Wednesday as police cleared pro-democracy demonstrators from a site in the city's Mong Kok district, the Facebook accounts of two student groups said.

Wong and Shum were among a small group of students at the heart of the pro-democracy protests that have blocked major thoroughfares in the Asian financial hub since the end of August.

(Reporting by Twinnie Siu and Venus Wu; Writing by John Ruwitch; Editing by Alex Richardson)