A new case of the Omicron strain of coronavirus has been discovered in NSW, with two other cases under investigation.
Health Minister Brad Hazzard told 7NEWS that the new case – a woman in her 30s – flew in from southern Africa.
NSW Health has since clarified that she arrived on November 25 via Doha.
It is believed she has spent time in the community on the NSW Central Coast and in western Sydney.
“Until today, we knew we had four cases – two came in on Saturday, two on Sunday,” Mr Hazzard said.
“We now believe there was another case – a woman in her 30s – that got on a plane on Saturday.
“This lady came in before the new schemes, i.e. moving to a health hotel, so she has been out in the community and it is health now being investigated.
“She’s essentially been out in the Central Coast area.”
The new infection is the fifth case of the Omicron variant to have been detected so far in NSW.
A sixth case of the variant has been identified in a returning traveler in the Northern Territory.
Meanwhile, urgent investigations are underway to determine if two more people who traveled into the state last week have the new variant.
The pair tested positive for COVID after landing on QR908 aircraft on November 25, NSW Health said.
Both are isolated in their respective homes.
“Urgent genomic sequencing is underway to determine if these cases have been infected with the Omicron COVID-19 variant,” NSW Health authorities said.
“All passengers on this flight must be tested immediately, regardless of previous test results and vaccination status, and isolated until a negative result is received.”
NSW recorded three more deaths and 179 cases of COVID on Tuesday.
Those who died include a man in his 50s from Tamworth, a woman in her 60s from south-east Sydney and a man in his 40s from western Sydney.
All three individuals had received one dose of a COVID vaccine and had underlying health conditions.
There are currently 160 people being treated for the virus at the hospital, 26 of whom are in intensive care.
All travelers arriving in NSW who have been to South Africa, Lesotho, Botswana, Zimbabwe, Mozambique, Namibia, Eswatini and Malawi within the 14 days prior to arrival in NSW must stay in hotel quarantine for two weeks in accordance with the Commonwealth measures.
It includes travelers who are fully vaccinated.
On Monday night, it was announced that the Seychelles had been removed from the list of countries on the advice of Australia’s chief physician Paul Kelly.