Hong Kong police have signalled their intent to enforce a new Chinese national security law strictly, arresting four youths Wednesday on suspicion of inciting secession through social media posts.
Three males and one female, aged 16 to 21, were detained, a police official said at an 11 pm news conference. All are believed to be students.
"Our investigation showed that a group has recently announced on social media that they have set up an organization for Hong Kong independence," said Li Kwai-wah, senior superintendent of a newly formed unit to enforce the security law.
The 1-month-old law has chilled pro-democracy protesting as activists along with academics and others wonder if their activities could be targeted.
The Central Government in Beijing imposed the national security law on the semi-autonomous Chinese territory after city leaders were unable to get one passed locally.