The government said on Tuesday that 13 people had tested preliminary positive during an overnight lockdown of a public housing block in Aberdeen.
Authorities completed its mass testing of Wah Yu House of Wah Fu Estate at around noon on Tuesday, having sealed off the building since 8pm the previous night.
More than 700 people were tested.
Officials said they were also following up on 16 households which did not answer the door when staff visited their homes.
The lockdown came after a resident in the block tested preliminary positive for Covid-19 and sewage samples from the building also came back with traces of the coronavirus.
Last updated: 2022-02-15 HKT 18:10