A court in Hong Kong adjourned a national security trial hearing of media mogul Jimmy Lai on Friday, due to concerns about his health, after his defense said he had been experiencing heart palpitations.

A court in Hong Kong resumed the closing arguments in the criminal trial of media mogul Jimmy Lai on charges of sedition and collusion with foreign powers.

Hong Kong pro-democracy tycoon Jimmy Lai has been charged under a Beijing-backed law critics say has been used to crack down on dissent.