A 28-year-old male childcare worker has been arrested and charged with indecent assault and sexual violation, following a complaint from a young person.
Counties Manukau Police acting detective senior sergeant Dean Batey said police have been investigating since the complaint was made on November 18.
"Inquiries are ongoing and police cannot rule out further charges being laid."
The boss of the childcare group confirmed the allegation related to a staff member who no longer works at the company.
She said in an email to parents this evening that the company takes any such allegations seriously.