A protester arrested on Wednesday for carrying an "independence" flag became the first person to be detained under Hong Kong's contentious new National Security Law.
"A man was arrested for holding a #HKIndependence [Hong Kong independence] flag in #CausewayBay, Hong Kong, violating the #NationalSecurityLaw. This is the first arrest made since the law has come into force," Hong Kong police said in a post on Twitter.
The arrest came on the 23rd anniversary of Hong Kong’s return to China, marked on July 1.
A flag-raising ceremony at the Golden Bauhinia Square was attended by top officials, including Chief Executive Carrie Lam.
She defended the new law in her address, saying it will help "restore stability and order" in Hong Kong, according to Chinese state-run media.
The legislation was unanimously passed by China's National People's Congress on Tuesday and then signed into law by President Xi Jinping.
It has drawn criticism within Hong Kong and in the international community, which Beijing has dismissed as "foreign intervention".
Hong Kong is a semi-autonomous region which has been part of China since 1997, when the UK handed over the former colony to Beijing.
Since last year, it has been mired in protests sparked by a move to legalize extradition of people to mainland China.
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