A woman killed in an early morning crash which also left three others injured may have been driving under 50km/h, police said.
But alcohol and a lack of seatbelts may have been contributing factors in the crash on Carrington Rd in Pt Chevalier, Auckland about 5.30am.
The car with four occupants crashed into another vehicle before smashing into a power pole, police said.
The 20-year-old female driver was killed, while her three passengers, all thought to be of a similar age, sustained moderate to serious injuries. The sole occupant of the other car was not injured.
Some of the occupants were trapped and firefighters had to cut them from the wreckage.