The U.S. State Department said that Hong Kong's offered bounties for six more pro-democracy campaigners who were deemed to have violated national security laws and the revoking of the passports of seven more amounted to intimidation efforts.

The police say they will give HK$1m to people who can help them find those accused of breaching security laws.

The teenage activist, who attended some of the protests back in Hong Kong in her school uniform, having gone straight from class to the marches when she was as young as 13, has been described as a “brave” and “fiercely pro-democracy” figure by those that know her.