The government said no Covid-19 cases were found after a lockdown operation at a residential block in Tung Chung wrapped up on Thursday morning.
La Rossa A (Block 7) of Coastal Skyline Phase 3 was cordoned off at 8pm, after authorities detected some positive cases there, involving a mutant strain.
The Centre for Health Protection had earlier said a few Covid-19 patients had visited an outdoor area at the Coastal Skyline housing estate where about 30 people regularly played football.
About 730 people were tested in the operation.