Victoria recorded 397 new cases on Saturday, significantly less than Thursday's peak of 723. Three deaths were also recorded - a man and woman in their 80s, and a woman in her 90s.

The deaths saw the national COVID-19 death toll rise to 201, with a death also recorded in NSW.

The state's Chief Health Officer Brett Sutton on Friday confirmed a New Zealand-style lockdown was being explored - restrictions which saw all businesses closed except for essential services.

Experts are working over the weekend to analyse infection data from the first half of Victoria's six-week lockdown.

Victorian Premier Daniel Andrews on Saturday admitted further lockdown rules could prove a "circuit breaker" for the continued COVID-19 cases, and that the state government was working through the details.

"What we have at the moment are numbers that are too high of community transmission and that is a concern to us," Mr Andrews told reporters.

"It is not a tap you can just turn on or off. They (further restrictions) are not decisions that would be taken lightly because there are significant costs ... even minor changes have a significant cost."

In the last 24 hours, Victoria Police has issued 168 fines to individuals for breaching the Chief Health Officer directions.

Of these infringements, 18 were issued at vehicle checkpoints.

In the past 24 hours, police checked 24,761 vehicles at the vehicle checkpoints on main arterial roads and conducted 900 spot checks on people at homes, businesses and public places across the state.

In the past 24 hours, police detected a man who travelled from Melbourne to Ballarat twice to "get some fresh air".

Police also detected a man travelling from Bentleigh East to Sunbury for take-away food and a man who travelled from Thornbury to Werribee to get a haircut from a favourite barber.

Police and emergency services minister Lisa Neville said the overwhelming number of Victorians were doing the right thing but there was also "appalling behaviour" that she and Victoria Police were "fed-up" with.

"There is absolutely no reason to drive from Melbourne to Wodonga to have a big mac. That's one of the fines that was issued yesterday.

"There is absolutely no reason or need to drive from Melbourne to Ballarat for fresh air.

"There is no reason to drive from Werribee to Springvale to buy groceries. They are just three of the fines that we saw issued yesterday."

A total of 200,535 spot checks have been conducted since March 21.

"If your'e thinking of using back roads or finding a way to get around the rules, Victoria Police will be there," Ms Neville said.

"They don't want to be doing this. They don't want to be fining people. That's not their role or how they work but they will do it because it's in the best interest of Victorians and Victoria's health.

"It's the best way we can get out of these lockdowns if we abide by these rules."

NSW on Saturday confirmed 17 new cases, sparking the closure of several Sydney venues for deep cleaning and contact tracing after being linked to coronavirus infections.

An 83-year-old man connected to the Crossroads Hotel outbreak in southwest Sydney on Saturday died, taking the NSW death toll to 52.

Queensland's latest case of COVID-19 is a woman who may have been infectious while working at a Brisbane nursing home.

The facility at Pinjarra Hills in Brisbane's west had already been put under lock down after the woman's husband tested positive on Friday.

Queensland Health Minister Steven Miles said extra nurses had been provided to the facility, and all staff and the residents at the home were being tested.

Adelaide is set to receive 170 people on Saturday on a repatriation flight from India, with all going into hotel quarantine. Officials are expecting at least some to have COVID-19.

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