Premier Daniel Andrews has given his strongest indication yet that Victoria's five-day circuit breaker lockdown could be lifted once it's scheduled to conclude at midnight on Wednesday.

The announcement of two new locally acquired COVID-19 cases and two internationally acquired cases on Tuesday was not unexpected given the exposure sites and contact tracing work the state has undertaken, Mr Andrews said.

"Those positive cases have been isolating with no further exposure sites and this shows the strategy is working," he said.

"We are well placed to be able to make changes on Wednesday night, but I am not in a position to definitively commit to that.

"We won't be able to make a final call until tomorrow."

Mr Andrews said the impracticalities of setting up a "ring of steel" at short notice meant regional Victoria and metropolitan Melbourne had to be covered by the same restrictions during this five-day lockdown.

"You can't set up a ring of steel in five minutes," he said.

"If you had given people any notice that Melbourne would be under stage four lockdown but not regional Victoria, a significant number of people would have travelled to regional Victoria.

"What this was designed to do is stop people travelling to where the rules are the softest and bringing the virus with them."

Mr Andrews also outlined the state's plan to examine alternative models of mandatory quarantine, including a purpose-built accommodation hub at either Melbourne Airport or Avalon Airport, to address the "new hyper-infectious, fast moving strains of coronavirus."

Based on a model in the Northern Territory, the Premier said a team of Victorian officials is planning to travel to the Top End to examine the quarantine facility there.

The model at Howard Springs involves single-storey accommodation, as opposed to the use of a multi-storey hotel.

"People would be accommodated in the same location but not sharing the same spaces," Mr Andrews said.

"It would be a cabin-style, village environment, with fresh air.

"It's not a zero risk environment, but is a lower risk and that work is ongoing.

As part of the hub, the state would seek to construct individual rooms that cater to a variety of family sizes with self-contained bathroom facilities, high quality or separate ventilation systems per room, including the use of windows and surfaces that are easily cleaned.

Mr Andrews said the government's planning work will not only investigate parcels of land for the hub, but also whether a facility would be used in conjunction with hotel quarantine locations in Melbourne.

It is proposed that the facility could also be used for future emergency accommodation needs such as bushfire emergency accommodation.

Earlier

Victoria has seen four new COVID-19 cases overnight - two locally acquired and two in hotel quarantine.

The new cases take the state's tally of active cases to 25.

Yesterday, 23,950 test results were received.

More news

Overnight, the Department of Health listed two new exposure sites in Broadmeadows.

Sacca's Fruit World in Broadmeadows Central is listed as Tier 1 exposure site.

Anyone who visited there between 12.30pm and 1pm on February 9 must isolate, test and remain isolated for 14 days.

The fresh fruit and meat section on the west side of Broadmeadows Central shopping centre is listed as a Tier 3 exposure site.

Anyone who visited here between 12.15pm and 1.15pm on February 9 should monitor for symptoms.

On Tuesday, Premier Daniel Andrews said it was too early to confirm the lockdown would finish on Wednesday night.

"It's too early for a definitive prediction on Wednesday evening. It will become more clear today, tomorrow and Wednesday morning," Mr Andrews said.

"As soon as we can possibly give Victorians some news, one way or the other, we will. You want the most contemporary picture.

"I'm able to say these numbers are pleasing, you never want positive cases, but we are well placed."

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