Hong Kong police have announced a fresh round of arrest warrants for six activists based overseas, with bounties set at $1 million Hong Kong dollars for information leading to their arrests.

WASHINGTON - 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.

Police accuse pro-democracy activists of offences such as secession, subversion and collusion with foreign forces

A Vancouver-based activist is accusing Hong Kong authorities of meddling in Canada’s internal affairs after police in the Chinese territory issued a warrant for his arrest.

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.

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