Officers said remarks made on an online discussion forum contravened the Prevention and Control of Disease Ordinance.
Chief Inspector Tai Tsz-bun of the Cyber Security and Technology Crime Bureau told reporters that the suspect, who works as an electrical repairman, called on others to oppose the government's anti-COVID-19 measures.
Tai said the man was suspected of calling on COVID-19 patients to spread the virus everywhere, including at so-called "blue shops", i.e., shops whose owners are considered supporters of the government.
He condemned such behaviour as "selfish and irresponsible", saying it would put public health at risk.
Tai added that preliminary investigations also indicated that the suspect incited others to kill judges on the same online discussion forum last year.
He said the man was being detained and investigations were ongoing.
- RTHK, MPD
