"This is the first arrest made since the law has come into force," the force added.
Hong Kong:
A man found in possession of a Hong Kong independence flag became the first person to be arrested under Beijing's new national security law for the city, police said Wednesday.
"A man was arrested for holding a #HKIndependence flag in #CausewayBay, Hong Kong, violating the #NationalSecurityLaw," police wrote on their verified Twitter account alongside a picture of the man and the flag.
"This is the first arrest made since the law has come into force," the force added.
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