New South Wales has reported another 825 locally acquired cases of COVID-19, the biggest daily case load in the outbreak to date.
Only 149 have been linked to known cases or clusters, with the origin of 676 still under investigation.
At least 58 were infectious while out in the community, with the status of 637 still unknown.
Three deaths were reported - a man in his 90s, a woman in her 90s, and a man in his 80s.
There are 516 people in hospital - 85 in ICU, 29 on ventilation.
All the figures are up to 8pm Friday.
Earlier, Queensland officials said they had no new cases to report. Victoria reported 61, with 13 of them not linked to known outbreaks. Victoria Premier Dan Andrews introduced new restrictions in Melbourne, including on businesses and childcare.
New Zealand reported 21 new cases, bringing the total above 50.
There have now been 11,395 cases in NSW since June 16, bringing Australia's total confirmed cases to more then 43,000. There have been 68 deaths since mid-June. Australia's total death toll is creeping towards 1000.
New Zealand Prime Minister Jacinda Ardern on Saturday said NSW's case numbers keep rising despite the lockdown because people keep breaking the rules, including going to work when they perhaps shouldn't.