Quarantine-free travel between New Zealand and New South Wales has been given the green light to continue for now.
Three community cases of COVID-19 have been detected in Sydney in the past 24 hours, but New Zealand's Ministry of Health says the risk to NZ remains low.
"The ministry strongly believes a cautious approach is the best course of action while investigations continue, so quarantine-free travel with New South Wales will be under constant review," director of public health Caroline McElnay said in a statement on Thursday evening.
"Border controls are a key tool for stopping the introduction and spread of new cases from overseas and remain central to our elimination strategy."
Dr McElnay said officials will be monitoring the situation and whether any more COVID-19 cases are detected.
"We remain in close contact with health officials in New South Wales and will continue to closely monitor the situation.
"Updates will be provided if there is any change to this latest advice."
The ministry said it's also contacting New Zealanders who have travelled from Sydney since last Friday - advising anyone who's visited locations of interest to get tested for COVID-19.
"Anyone who develops symptoms should self-isolate and contact Healthline about getting a test.
"Anyone who is in Australia and was at any of the locations of interest at the times specified is asked to follow NSW health advice regarding isolation and testing, and must not travel to New Zealand within 14 days from when they were at the location."
