Suspects arrested by Chinese agents may face trial on the mainland as per the new national security legislation.
National security laws in Hong Kong have been called a"death knell"and"badly damaging". Why are they so controversial?
The laws imposed by Beijing are broader than the extradition bill that triggered city-wide protests last year.
China is drawing up plans for the city's leader to select judges for national security cases,with lawyers calling it a serious challenge to the territory's judicial independence.
The chair of Australia's Foreign Affairs committee,David Fawcett,joined with his counterparts from the UK,Canada and New Zealand on Wednesday to urge the United Nations to appoint a special human rights envoy.
Chief Executive Carrie Lam says China's tough new sedition laws are needed to restore business confidence,but the city is braced for more protests.
Beijing is set to establish new national security agencies and introduce a raft of tough new laws against dissent in Hong Kong as it attempts to wipe out protests in the Chinese territory.
Accusations of police brutality must not be used as"a weapon of political protest",Hong Kong's police watchdog said in its controversial report.
Fears of more protests as Hong Kong Chief Executive Carrie Lam prioritises a controversial law making it illegal to disrespect China's national anthem.
Government employees will start returning to offices on May 4 and the city is preparing to open facilities including museums and libraries.
China's state council approved a Hong Kong government shake-up on Wednesday at a time when Beijing is reaffirming its authority over the city,raising political tensions and risking a revival of anti-government protests after months of relative calm.