There have been strong protests against the lockdown in several Australian cities.
In the country's largest city, thousands of people in Sydney protested against corona measures and there were clashes with the police.
On Saturday, 57 arrests were made and several officers were injured in the clashes between protesters and riot police, according to Elliott.
The demonstrators were not wearing face masks.
New South Wales Police Minister David Elliott has announced the setting up of a special investigation unit to identify the demonstrators using CCTV footage.
Elliott wants to sue them for violating the measures.
The minister said he wants to trace an estimated 3,500 demonstrators.
There has been a lockdown in Sydney for five weeks and it could last until October, because the number of corona infections is rising alarmingly, especially in the west and southwest of the metropolis, according to the authorities. More than 8 million people live in the state of New South Wales and 2,000 infections have now been registered, 163 of which were on Saturday. In Australia, where it is now winter, the vaccination campaign has barely started and only 12.4 percent of the population is fully vaccinated.
Lockdowns have also been announced in Melbourne and Adelaide and protesters took to the streets on Saturday afternoon.
In Brisbane, where no lockdown has been announced, there were also demonstrations against the corona policy.
People shouted for freedom and carried banners saying that the country must wake up and that the government is more dangerous than COVID-19.
The travel bubble between Australia and New Zealand was suspended for at least eight weeks on Friday.
The reason is the increase in the number of corona infections in Australia due to the advancing delta variant of the virus.