Wong reportedly held flowers in her outstretched hand as she was surrounded by authorities and led to a police car.
It is not yet known on what grounds the people were arrested, but since a new security law was introduced in 2020, it has been forbidden to commemorate the anniversary of the massacre.
On Saturday, four people were arrested for drawing attention to the massacre, according to Hong Kong police, for “incitement” and “outrageous behavior”.
This year marks 34 years since the student-led protests in Beijing’s Tiananmen Square were violently put down. At least several hundred people were killed, according to some reports upwards of 3,000.