Two 15-year-olds allegedly led police on a chase in a stolen car and rammed a police vehicle during the 40-minute pursuit.
Police spokeswoman Sarah Kennett said officers saw a car speeding along Maunu Rd near Whangarei Hospital yesterday and made attempts to stop the car but it sped off about 9.25am.
Mrs Kennett said the chase was suspended while the car sped through busy areas.
"The fleeing driver was going through a built-up suburban area near schools. Police began searching for the car in the area and it was spotted again."
The car travelled along Mangakahia Rd to Titoki and allegedly reached speeds of 120km/h to 140km/h.