The Centre for Health Protection on Friday reported three imported coronavirus cases.
Two involved domestic helpers from Indonesia, with one of them found to have the L452R mutant strain of coronavirus.
The third new patient, a seaman from Cyprus, was found to be infected with the N501Y mutant strain of the virus.
Friday was the 11th consecutive day that the SAR recorded zero additional local Covid-19 infections.
There were fewer than five preliminary positive cases.