An Australian state's decision to lock down more than 3,000 people in public housing towers violated human rights, Victoria's Ombudsman Deborah Glass has declared.

The restrictions were imposed on 4 July in response to a surge in coronavirus cases in Melbourne city.

Residents in eight tower blocks were confined in their apartments for five days but the ninth tower, which had the highest number of infections, went through a total lockdown for two weeks.

Some residents were left without food and medicines while many others waited more than a week to be allowed outside, the report said.

Victoria's acting chief health officer had only 15 minutes to consider and approve the lockdown, including the potential human rights impacts, Ms Glass said in her report released today.

"The rushed lockdown was not compatible with the residents' human rights, including their right to humane treatment when deprived of liberty ... the action appeared to be contrary to the law," she said.

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The Victorian state government conceded mistakes were made, but said decisions were taken to ensure the safety of the residents.

"We make no apology for saving people's lives, absolutely no apology for saving people's lives," Victoria state Housing Minister Richard Wynne told reporters.

It was not immediately clear whether the findings would open up any legal remedies for residents to pursue against the government.

Victoria was placed into a statewide lockdown days after authorities shut the towers to contain fresh outbreaks but it has since effectively eliminated the virus due to the lockdown.

No new cases have been reported in the state for 48 straight days as of today.