It came after prosecutors withdrew an appeal against the court decision to grant them bail.

The four are part of a group of 47 activists charged with conspiracy to commit subversion.

Their case has triggered global concern that Beijing is using its national security law to crush dissent and wipe out meaningful opposition in the former British colony.

The case is the most sweeping use yet of the law, which imposes punishments of up to life in prison for serious charges, including subversion.

One of those granted bail was Mike Lamb.

I'm Tired I 47 activists are accused of organizing and participating in an unofficial nonbinding primary poll last July.

Authorities said it was part of a plot to overthrow the government.