Reports suggest Nurmemet Tohti was only released after becoming incapacitated by diabetes and heart disease.
Truong Minh Huong was assaulted after leaving a restaurant following a visit to political prisoners made with family members and friends.
Wong, released a day after a record-breaking protest against a planned renditions law, also calls for the resignation of chief executive Carrie Lam.
Washington says “highly inappropriate” visit risks endorsing Beijing’s problematic view of the Uyghur issue.
