Efforts to quell Auckland's fruit fly crisis have suffered another setback after authorities found more adult flies and larvae in the affected suburb of Grey Lynn.
The Ministry for Primary Industries confirmed the discovery of two more adult male Queensland flies in traps - bringing the total number found to 10 - while larvae were found at two properties within the containment zone.
The ministry continues to play down fears the invasive pests could become widespread here, whilst warning that more of the species are expected to be found.
"This is not a game changer, as both properties are within the A Zone of the Controlled Area," it said in a statement.
"It is not unexpected that more larvae will be found. It tells us that the fruit harvesting and diagnostic work is delivering the results it should be."
Authorities also thanked the 40,000 cricket fans who attended Saturday's World Cup clash between New Zealand and Australia at Eden Park, which is within the controlled fruit and vegetable area.
Fifty-eight biosecurity staff joined with Eden Park security to help ensure patrons did not inadvertently spread the flies by taking at-risk fruit and vegetables home with them.