A Waitakere Township resident has a warning for locals after a threatening letter was left on her car window while she was parked outside Waitakere Primary School.
On Tuesday the resident went to park down Anzac Valley Rd so she could watch the school's cross country.
But when returning to her car, which she claims was parked on the gravel near the school, she found a nasty note on her windscreen.
The person behind the note takes aim at the driver of the car, threatening to lay down nails should the driver return.
The note reads: "Please don't park on my grass as it causes damage to the berm. Which makes it extremely difficult to mow.