The second-most-populous state of Australia, Victoria, confirmed its biggest rise in the number of coronavirus or COVID-19 cases since late March on Saturday, forcing the expansion of the stay-at-home orders to more Melbourne suburbs and the complete lockdown of nine public housing towers.

The southeastern state confirmed 108 new cases of the deadly novel virus on Saturday, up from 66 on Friday, and over 70 new cases in each of the earlier four days. "These numbers are a very real concern to all of us," Victorian Premier Daniel Andrews mentioned in a news conference.

The spike in Victoria is being closely watched as the rest of the country has reined in the virus that causes COVID-19. Australia's most populated state, New South Wales, reported six new coronavirus cases on Saturday, five of them returning travelers from overseas.

COVID-19 in Australia

Coronavirus
A worker of Junjiang Industrial Limited Company arranges disposable surgical gowns in Yilong New District at Bouyei-Miao Autonomous Prefecture of Qianxinan in southwest China's Guizhou Province, Feb. 21, 2020. Medical supply companies in Yilong New District have been producing medical supplies at full capacity to support the fight against the novel coronavirus, or COVID-19. (Xinhua/Yang Wenbin/IANS) Xinhua/IANS

The sixth is a past infection and not an active case, according to health officials. The state reported no new cases on Friday. Overall, Australia has weathered the coronavirus pandemic much better than most other nations, with just over 8,300 cases and 104 deaths so far.

The nine towers in Melbourne consists of 1,345 units, housing about 3,000 residents. They will be locked down for at least five days, effective immediately after many residents from those towers returned a positive COVID-19 test. Police will be placed on each floor of the towers and law enforcement authorities will also control access points.

"These are very challenging times," Premier Andrews added. "The alternative is this gets right away from us and we have not just 12 postcodes in lockdown but every postcode locked down. I don't want to get to that."