Pro-democracy media tycoon Jimmy Lai is physically breaking down in a Hong Kong prison and "time is running out" for him if the U.S. and Britain do not push for his release, his son said.

As pro-democracy publisher Jimmy Lai spoke in his defense at a Hong Kong court Tuesday, his son Sebastien Lai was in Geneva calling for the United States and other world leaders to help secure this father's release.

Pro-democracy media tycoon Jimmy Lai's health is deteriorating in a Hong Kong prison, prompting international pleas for his release. Lai was jailed under the controversial national security law, and his son has urged the U.

HONG KONG -- The marathon national security trial of Hong Kong media tycoon Jimmy Lai Chee-ying has sparked a heated exchange over whether he is a "political prisoner" and an unusual defense of the court by a presiding judge.

Jailed HK tycoon Jimmy Lai also denied giving inaccurate testimony to the court as he maintained he was not aware of the existence of IPAC.

Former media boss says Apple Daily op-ed that called for leadership team was simply to help radical protesters set basic principles.