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.

China on Friday warned the United States it did "not tolerate interference" after the US State Department called Hong Kong's announcement of bounties on six democracy campaigners based overseas "a form of transnational repression".

Hong Kong offered bounties of HK$1 million ($128,728) on Tuesday for six more pro-democracy campaigners deemed to have violated national security laws, and revoked the passports of seven more, as the Asian financial hub keeps up a security campaign.

Hong Kong police on Tuesday announced a new round of arrest warrants for six pro-democracy activists based abroad, with bounties set at 1 million Hong Kong dollars, or about $129,000, for information leading to their arrests.

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

Foreign ministry hits out at ‘blatant attacks and smears on the legitimate law enforcement actions of the Hong Kong police by certain countries’.

Hong Kong national security police offer bounties for six ‘fugitives’ - Police accuse pro-democracy activists of offences such as secession, subversion and collusion with foreign forces