Lai, who has been charged under a Beijing-backed law critics say has been used to crack down on dissent, will be back in court on Monday.

The final arguments in prominent Hong Kong activist Jimmy Lai’s national security trial have been postponed after his lawyer said he experienced heart palpitations and the judges wanted him to receive medical treatment first.

The trial of Jimmy Lai, Hong Kong media mogul, are postponed for a few days due to issues with the 77-year-old's heart. Closing arguments are set for Monday.