Up to four people were injured in a crash that closed part of Auckland's north-western motorway this afternoon.
The NZ Transport Agency said about 12.40pm that State Highway 16 after Royal Road, west-bound, was closed just after the Royal Road on-ramp and Hobsonville Road.
Emergency services are at the scene, where a car crashed earlier.
No one is thought to have been seriously injured in the accident.
A police spokeswoman said the crash was thought to have involved three vehicles.
All lanes reopened at 12:56pm according to a tweet from the agency, but there was still congestion.