Fraudulent bank notes are being found at businesses across Counties Manukau.
Detective Sergeant Simon Beal says the counterfeits currently circulating are commonly $50 and $100 notes.
"If you know it is counterfeit and still pass it on, you are committing a serious offence that is potentially punishable by a lengthy term of imprisonment," he says.
The Reserve Bank of New Zealand's plastic notes have been out since 1999 and have numerous security features so they can easily be told apart from a fake.
But Mr Beal says many fakes are poor quality.
"Some notes that have been found are clearly not genuine," he says.
"With information available about how to detect a fake note, those who knowingly deal in them will not be able to claim ignorance."
Mr Beal says counterfeiting affects businesses and people across the country.
"People should always report to police if they think they have received a fake note, whether in business or given as change."
Call the Counties Manukau police financial investigation unit on 262 9121 or Crimestoppers anonymously on 0800 555 111.
- © Fairfax NZ News
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