Pro-democracy Hong Kong media voice arrested under China security law

Hong Kong media tycoon Jimmy Lai has been arrested over suspected collusion with foreign forces under the new national security law, his top aide says, in what is the highest-profile arrest yet under the legislation.

Hong Kong "subversion" arrests under new China security law

Hong Kong police have arrested four people aged 16 to 21 for suspected offences under the city’s new national security law – the first such detentions outside of street protests since the legislation took effect a month ago.

China's paramilitary police and vehicles including armoured personnel carriers have gathered at Shenzhen, across the border from Hong Kong. Photo: AP/Alex Plavevski

China warns Hong Kong protesters it will "quell any unrest"

Hong Kong is bracing for more mass protests over the weekend as China warned it could use its power to quell demonstrations.

More guards, patrols for Adelaide public transport

The number of roving security guards able to respond to serious incidents across Adelaide’s public transport system will be quadrupled, under the last stage of a three-year network security upgrade.