A number of people are injured and two have died in three separate crashes involving motorcyclists today.
A motorcyclist died at a drag racing event at Meremere in north Waikato.
A post from the NZ Motohub social media group, that was filming the event, said the rider was travelling at about 268 kilometres an hour when he came off at the end of the drag strip.
The event has now been postponed.
Raceway organisers have posted a notice on its website.
Meanwhile, a person has been killed when a quad bike rolled in the Waitomo District on Tikitiki Road, south of Te Kuiti. Two others have been seriously injured.
There was also another motorcycle crash north of Auckland. Part of State Highway 1 is closed near Warkworth because of a crash between a motorbike and a car. One person has been seriously injured, and another moderately.
The accident happened just before 4pm near Whitaker Road. Motorists are asked to avoid the area.