Travellers entering NSW from Victoria must enter hotel quarantine
All returning travellers entering New South Wales from Victoria will be required to enter a compulsory 14-day hotel quarantine.
Premier Gladys Berejiklian said the decision was made to attempt to stem the spread of COVID-19 across the border as the number of infections and deaths continue to rise in Victoria.
Travellers will not be allowed to cross the border by car, and must travel through Sydney Airport to gain access to the state.
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"We don't want to see multiple places where returning travellers," Ms Berejiklian said.
"And we also feel, given the evolving situation in Victoria has been going on for some weeks, that - that people do that at their own expense.
"There should be no difference from a NSW citizen coming back from an overseas destination in terms of the cost having to pay versus the cost of returning travellers from Victoria."
She said there are exceptions to the new restrictions, such as hardship.
NSW Health Minister Brad Hazzard says Victoria's spike in coronavirus case numbers sends a clear message NSW needs to be on high alert.
Victoria recorded 725 new cases and 15 more deaths, including a man in his 30s.
Mr Hazzard said residents across NSW should treat everyone as though they are COVID-19 positive.
"I was hopeful that we would have seen an improvement in Victoria… today over 700 sends a very clear message that we need to be on high alert," he said.