Victoria's streak of days free of COVID-19 community transmission continues.
But seven new cases of the virus have been detected in people arriving from overseas.
It comes after COVID-19 Quarantine Victoria on Saturday confirmed three positive test results linked with two Australian Open chartered flights.
None of the infected people on those flights are Australian Open players.
There are 30 known active cases of COVID-19 in Victoria, with more than 11,000 test results received.
Sunday is Victoria's 11th consecutive day without a new locally-acquired coronavirus infection.
The Victorian Government on Saturday downgraded coronavirus 'red zones' in Queensland to 'orange zones'.
The change enables people in Greater Brisbane and its affected surrounds to apply for permits to return to Victoria.
Premier Daniel Andrews hoped to be able to drastically reduce the amount of 'red zones' in New South Wales within days.
Two passengers and a crew member on two separate charter flights for the Australian Open have returned positive tests.
A passenger and a crew member on a charter flight from Los Angeles tested positive for the virus.
COVID-19 Quarantine Victoria on Saturday night confirmed a passenger on another Australian Open charter flight, which landed at 8.20am on Friday from Abu Dhabi, had returned a positive COVID-19 result.
The passenger's pre-departure COVID-19 test was negative.
The infected passenger has been transferred to a health hotel. All of the other 63 passengers on the flight were deemed close contacts.
The total number of close contacts linked with both the chartered flights is 129. Australian Open players and support people on those flights will be unable to access training while in quarantine.
The virus cases in chartered flights for the Australian Open came after Emirates announced it was suspending flights to Australia's eastern seaboard.
Acting foreign affairs minister Simon Birmingham said the decision by Emirates would not result in a loss of capacity to bring Australians home.
The federal government has responded by scheduling 20 more flights for stranded Australians and re-allocating the capacity it had reserved for Emirates to other airlines.
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