Police officers approach a man for not wearing a mask at Strathfield station, Sydney, on August 12.
CNN  — 

Additional Australian military personnel will be deployed to enforce tighter Covid-19 restrictions in the greater Sydney area next week, authorities announced Saturday, as the entire state of New South Wales (NSW) prepares to go under lockdown.

It comes as the country continues to battle the highly infectious Delta coronavirus variant. On Saturday, NSW reported 466 new locally transmitted cases – a record – to take its total number of infections this year to 12,903.

NSW Premier Gladys Berejiklian called it the “most concerning day” of the pandemic, adding the state was “throwing everything at it.”

“This is literally a war,” she said at a news conference, shortly before the state’s deputy premier announced NSW would enter a snap seven-day lockdown starting 5 p.m. Saturday.

Stay at home orders will be applied across the country’s most populous state, with people only permitted to leave home to shop for essentials, receive medical care, outdoor exercise with one other person, and work if residents cannot work from home. Schooling will also be moved back online.

Australian Defence Force personnel and NSW police load food packages for delivery to people in lockdown at the Prairiewood Leisure Centre in Sydney on August 2.

Sydney, the capital of NSW, has been under lockdown measures for more than seven weeks now, and they will likely be extended further; they were set to end on August 28 but the state government has indicated restrictions will remain through September.

Australia’s Department of Defense said on Friday it had received a request for extra personnel to help support police to enforce home-quarantine orders in Sydney’s worst-affected suburbs, according to Reuters.

More than 500 army personnel are already helping police in the city, which has a population of about 5 million people, including monitoring compliance activities at hotels and airports. An additional 200 personnel will be deployed starting Monday.

They will be part of Operation Stay at Home, which also launches Monday, in which residents must stay within a 5-kilometer (about 3.1-mile) radius of their home, Berejiklian said Saturday.

Fines for noncompliance are being increased, including a 5,000 Australian dollar (about $3,680) penalty for breaching home quarantine or giving false information on a exemption permit or to a contact tracer, according to state officials.

Fines for exercising in groups of more than two people and traveling into regional parts of the state will also increase to 3,000 Australian dollars (about $2,200).

Lockdowns have also been imposed in other major Australia’s largest cities – at least 10 million people nationwide now face restrictions, making up about 40% of the country’s population.

Australian Prime Minister Scott Morrison is under fire for a sluggish vaccine rollout, with 19.65% of its population fully vaccinated, according to data from Johns Hopkins University. This is far below numbers seen in the United Kingdom, the United States and the European Union – despite Australia’s smaller population.

Reuters contributed to this report.