By RNZ
All arrivals from the United States and United Kingdom are now required to provide a negative result 72 hours before departure.
A Customs spokesperson told RNZ that a person was leaving the UK under an "emergency situation" and received a warning instead of a fine.
The spokesperson said Customs is currently taking an "educational approach" to people arriving without evidence of a pre-departure tests.
From January 29, fines of up to $1000 can be issued for arriving without a negative test.