Five travellers from New Zealand have been forced into hotel quarantine in Adelaide after arriving unexpectedly on a flight from Sydney.
South Australia is not yet part of a travel bubble with New Zealand, which currently only New South Wales and the Northern Territory have signed up to.
SA Premier Steven Marshall made the announcement at a press conference this afternoon.
All five people arrived in Adelaide yesterday.
Mr Marshall said the passengers identified themselves at Adelaide Airport and are now in hotel quarantine in Adelaide.
Mr Marshall said the State Government was now considering its border arrangement with New Zealand.
"We are looking very closely at the arrangements with regards to our borders with New Zealand," he said.
"They've done extraordinarily well and we're hopeful that we might be able to lift that border restriction with New Zealand when it's safe to do so."
Within days of the scheme operating, travellers have ventured to Western Australia, Victoria, Tasmania and now South Australia.
"All of our protocols were observed when these passengers came in," Mr Marshall said.
"Our system here in South Australia works extraordinarily well."
An SA Police spokeswoman confirmed the Premier's statement.
"All have been placed into medi-hotels to complete quarantine as per normal arrangements with international travellers," she said.
"There will be an increase in public information to ensure sufficient information is being disseminated in SA and NSW to advise travellers of the requirement to quarantine if travelling to SA."
Australians can still not travel to New Zealand.
