Jimmy Lai, the pro-democracy former Hong Kong media tycoon and a fierce critic of Beijing, has been sentenced to 20 years in prison in one of the most prominent cases prosecuted under a China-imposed national security law.

A Hong Kong court moved closer to sentencing prominent democracy advocate Jimmy Lai, who was convicted under a national security law and could face up to life imprisonment.

A Hong Kong court is hearing arguments about the sentencing of democracy advocate Jimmy Lai.

Hong Kong police have used a sweeping national security law to arrest five editors and executives of a pro-democracy newspaper on charges of colluding with foreign powers.