Health officials on Sunday said no new cases had been found at the three overnight lockdowns at residential blocks in North Point, Causeway Bay, and Tung Chung.

The Covid testing exercises - prompted by three preliminary positive cases that may involve the Omicron variant - took place at Block B of Flora Garden on Cloud View Road, Tower 1 of Jupiter Terrace on Jupiter Street, and Shun Yat House on Yat Tung Two Estate.

Officials said a total of nearly 1,700 people were tested.