The third case is a six-year-old Singaporean girl who arrived from India on July 3.
The three imported cases were reported on Friday.
Singapore on Saturday reported 307 new coronavirus cases, taking the country's total count to 52,512.
The new cases include one community case, who is a Singaporean, said the MOH.
The rest 306 were foreign workers living in dormitories.
There were also five imported cases who had been placed on stay-home notices upon arrival in Singapore.
There are currently 136 confirmed patients hospitalized while 5,551 are isolated and cared for at community facilities for mild symptoms, or are clinically well but still test positive for COVID-19.
In all, 46,491 COVID-19 patients have fully recovered from the infection.
(Only the headline and picture of this report may have been reworked by the Business Standard staff; the rest of the content is auto-generated from a syndicated feed.)
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