Tamworth in NSW's New England region will lock down for a week after "somebody left Newcastle" to visit the New England town.
NSW Premier Gladys Berejiklian said that there were no confirmed cases in Tamworth yet but several exposure sites with links to the Hunter's outbreak.
"Unfortunately somebody from Newcastle went to Tamworth and there are a number of exposure sites there," she said.
Dr Kerry Chant said a young lady was exposed to the virus in the Hunter, travelling to Tamworth on August 4 and visiting a number of venues.
Close contact venues include Inland Cafe on August 5 from 9.15am to 10am, the Tudor Hotel between 11am and 11.40am the same day.
Dr Chant also listed Mr Rice on Darby Street and Habesha Ethiopian restaurant at The Junction as connected to that case.
Casual contact venues in the New England also included Supervape in Tamworth on the 5th from 10.55 to 11.05, Ampol roadhouse from 12.25pm to 12.30.
Anyone at a close contact venue is required to get tested and isolate for 14 days, whereas casual contacts must get tested and isolate until they get a negative result.
"She then returned to Newcastle on the 5th of August, hence why there are no additional exposure venues from that time," Dr Chant said.
NSW set a new record with tests in the 24 hours to 8pm on Sunday, notching 133,000.
Unfortunately it also detected 283 cases of community transmission.
Ms Berejiklian said there were "at least 64 infectious for that time in the community" from among that number.
A woman in her 90s, who was unvaccinated and in palliative care, has died after contracting COVID.
Canterbury-Bankstown remained the epicentre of the virus in NSW, Ms Berejiklian said.
"We ask everyone in that local government area to be especially careful, and not to leave. Unless it is essential you should not be going into those areas if you don't live there."
Dr Kerry Chant said Sydney's eight local government areas remained what authorities were most concerned about.