The Centre for Health Protection today said it is investigating 76 additional COVID-19 cases, of which 72 are locally transmitted.

Among the local cases, 27 have unknown sources of infection.

At a press briefing this afternoon, the centre's Communicable Disease Branch Head Dr Chuang Shuk-kwan said 23 of the newly infected patients live in Yau Tsim Mong District.

She added that 27 environmental samples were taken from Kensington Plaza in Jordan for virus testing, of which eight have positive results.

Meanwhile, three more buildings are now covered by compulsory testing notices.

One of them is in the specified area in Sham Shui Po while the other two have recorded confirmed and unlinked cases in two or more units in the past 14 days.

The Government also required people who had been at Yan Shek House of Shek Yam Estate in Kwai Chung to take a second COVID-19 test due to the possible long incubation period of the virus.

To implement the compulsory testing notices for such areas, it will set up mobile specimen collection stations in Shek Yam Estate as well as On Tat Estate in Kwun Tong on January 25 and extend the service period of the one at Maple Street Playground to January 27.

All four imported cases involve foreign domestic helpers from Indonesia.

For information and health advice on COVID-19, visit the Government's dedicated webpage.