Three people have died in crashes on New Zealand roads since late last night and a fourth has been killed in a quadbike incident.
A male driver died and two other people were injured after a two-car crash near Riversdale in Southland about 9.30am.
One of the injured people was a female teenager who suffered "very serious" injuries, a St John Ambulance spokesman said.
The other patient, whose age and gender was unknown, was moderately hurt. Both have been flown to Dunedin Hospital.
In Waiuku, south-west of Auckland, a second person has died at the scene of a single-vehicle crash.
Police were notified of the incident on Kairoitahi Rd at 5.20am, Inspector Kerry Watson said.
And a driver who died in Hamilton last night was not wearing his seatbelt at the time of the crash, police said.
Emergency services were called to Hall Rd, in the suburb of Frankton, about 11.30pm.
It appeared a Honda hit a kerb and a small wall before colliding with a large signpost and stopping, District Road Policing Manager Inspector Freda Grace said.
The sole occupant, a 25-year-old man, was killed. Seed may have been a factor in the crash, Ms Grace said.
The fourth death involved a quadbike crash on a Waikato farm this morning.
Details about the victim - including gender and age - were yet to be released by police, but a spokesman said emergency services were called to the farm near Chartwell about 5.45am.
The farm was on Puketaha Rd, near the intersection with Seddon Rd.
Paramedics were called but the patient had died before emergency services could get there, a St John Ambulance spokeswoman said.
WorkSafe New Zealand had been notified.
Meanwhile, one person was airlifted to hospital in a serious condition after a crash involving a stolen car in Northland this morning.
Two cars collided about 5.20am outside a phosphate factory near Kaiwaka.
