Five of today’s 14 new coronavirus cases in Victoria are under investigation with no clear source yet determined, Premier Daniel Andrews said.
The nine other cases have been linked to known outbreaks.
Providing his daily coronavirus update, Mr Andrews revealed that active cases across the state have fallen to 743.
There have also been five further deaths, all of which are in aged care residents.
There were no additional cases in regional areas overnight, with just 26 active cases remaining outside of greater Melbourne.
The rolling 14-day average for cases in regional Victoria is now just 1.8, compared to 36.2 for greater Melbourne.
“These numbers are cause for great optimism and a positivity, I would hope, right across metropolitan Melbourne, just as regional Victoria this week has taken two big steps to open up and we’re seeing stability in those numbers,” Mr Andrews said.
“This is a good day though – a day where Victorians can be proud of the work they’ve done, their commitment, their resolve to see this off.”