Key facts
- Wong Kwok-ngon, 72, is accused of violating Hong Kong's national security law.
- He denies exposing police intelligence operations.
- Wong claims details of his meeting with officers were public before he posted them.
- He is the first person prosecuted for allegedly prejudicing a national security investigation.
A Hong Kong news commentator, Wong Kwok-ngon, 72, who ran a YouTube commentary channel under the pen name Wong On-yin, has denied exposing police intelligence operations. He is accused of violating the national security law and stood trial at the District Court on Friday. Wong is the first person in Hong Kong to be prosecuted for allegedly prejudicing an investigation into national security. He told the court that details of his meeting with officers were already public knowledge before he posted them online.