Health officials on Tuesday said they found no new Covid cases, after locking down two buildings overnight.

Residents of Po Wah Court in Cheung Sha Wan were tested following a case linked to the Silka Seaview Hotel.

They include a 29-year-old food courier and a nine-year-old boy, who last went to Li Cheng Uk Government Primary School on Friday. The family members were quarantined on Saturday and four of them tested preliminary positive on Monday.

Officials also sealed off Kui Wo House on Tai Wo Estate in Tai Po, after an indeterminate test result from a 23-year-old woman with no symptoms.

Authorities are verifying her case but in the meantime, decided to test residents to rule out any infection risks.

Around 2,550 people were tested in the two operations.