'Dark new phase' in Hong Kong as pro-democracy media tycoon Jimmy Lai is arrested, his newsroom raided

Once seen as the bastion of free press and speech in Asia, Hong Kong now appears to be changing day by day.

Police detained the city's most prominent media tycoon and Beijing critic, Jimmy Lai, under the new national security law on Monday morning.

Hundreds of police officers also stormed the newsroom of his pro-democracy media outlet, Apple Daily, rummaging through documents on journalists' desks as Lai was led through the office with handcuffs.

Lai's arrest, for suspected collusion with foreign forces, is the highest-profile use of the sweeping new...