Two ministers in Prime Minister Mark Carney's government are condemning Hong Kong police's new arrest warrants for 19 overseas-based activists and their offer of rewards for information leading to their capture.

Hong Kong's national security police announced arrest warrants for 19 activists based overseas, accusing them of subversion under a stringent national security law, marking the largest such tally yet.

Hong Kong police have announced rewards for information leading to the arrest of 19 overseas-based activists, accusing the activists of violating a national security law imposed by Beijing over their roles in a group called Hong Kong Parliament.