He was sent to the facility after attending the birthday party of NPC deputy Witman Hung at a Spanish restaurant in Wan Chai on January 3. The appearance of more than a dozen government officials at the party was criticised by Chief Executive Carrie Lam.
Tsui was seen boarding a private car and leaving the facility on Monday evening.
Through his press secretary, Tsui said the Centre for Health Protection allowed him to leave the quarantine centre as he’d tested negative.
Tsui added he will continue to monitor his health and get tested for the coronavirus a few days later.
Two other officials who were in isolation after attending the party – Director of Immigration Au Ka-wang and the political assistant to the secretary for development, Allen Fung – have also completed their quarantine and left the Penny’s Bay facility.
The government earlier shortened the quarantine period for close contacts at Penny’s Bay from 21 to 14 days.