Hong Kong police say they have arrested two more people on suspicion of violating the territory's national security law.
Police announced the arrests on Thursday. Sources say they are the pro-democracy activists Joshua Wong and Tam Tak-chi. Both were already in custody at the time of the arrests. They are being charged with subversion.
Wong has been behind bars since he was sentenced to prison last month for inciting and participating in a protest outside police headquarters in 2019. Tam has been in detention after having been indicted on different charges.
Police say the latest arrests concern an unofficial vote organized by pro-democracy activists to choose candidates for a Legislative Council election that was to be held in September. The election was postponed.
Police arrested 53 people on the same charges on Wednesday. Most of them were released between Thursday night and early Friday morning.
Former Legislative Council member, Raymond Chan Chi-chuen, was freed after about 40 hours of detention.
Chan said his arrest is completely absurd because what he and others sought to win through the election were rights protected by the Basic Law, which effectively serves as Hong Kong's constitution. He also said the government has been mobilizing a range of means to quash dissent.
Analysts and even some influential pro-China figures say it may be difficult for the charges against the activists to hold.