“If we see those numbers and community transmission go up at a rate that we are not comfortable with, we will have to put in stricter measures,” Ms Berejiklian said.
“We want to make sure that we keep our community safe by making sure the people adhere to strict isolation measures.”
NSW Police Commissioner Mick Fuller said additional restrictions would begin at midnight with all travellers returning from overseas to be screened by health authorities and taken by bus from the airport straight to hotel rooms for 14 days isolation.
They will be monitored by police to ensure they adhere to quarantine.
NSW Police Minister David Elliott urged people to respect police officers and soldiers who will be enforcing the quarantine and social distancing rules after Maroubra beach was closed on Saturday following groups of people congregating.
“I have spoken to police that have been abused,” Mr Elliott said. “I have spoken to police that have been spat on. I have spoken to police that have been ignored, just for doing their job.
“Their job is not to punish you. Their job is to save your life.”
NSW Chief Health Officer Dr Kerry Chant said cases of community transmission have increased to 170 and she urged the community to practice social distancing and isolation measures.
“It is critical that we get compliance, to see a downturn in that community transmission, and I urge the community to take this matter seriously and please comply,” she said.
On Saturday, a 91-year-old woman from the Dorothy Henderson Lodge became the eighth person to die in NSW.
The woman was one of the four residents who tested without symptoms by NSW Health on March 20. She later developed symptoms and was hospitalised five days later.
There are 22 people in NSW Intensive Care Units and, of those, 11 require ventilators.
NSW Health said there are several cases which may have spread the disease in Sydney including a school teacher at Ashcroft High School who was at the school for a day while infectious, but did not teach classes.
There are two confirmed cases at a Sydney childcare centre – a two-year-old child and a childcare worker.
Contact tracing is underway following two cases from a group of 100 Chilean navy personnel who are self-isolating in hotels in Sydney. A fourth case has been confirmed at the Opal Bankstown residential aged care facility.
Ms Berejiklian said social distancing were showing “positive results”, but it was too early to know if it is enough.
“It is too early to determine whether it is enough, and that is why I am putting NSW on notice,” she said.
She said she was putting NSW “on notice”.
“Never, ever do you have to hoard from supermarkets. Supermarkets will always be open, pharmacies, service stations, essential things that people need to do to keep the community and all of us going.
Nigel Gladstone is an investigative journalist at The Sydney Morning Herald.
Laura is a journalist for The Sydney Morning Herald.