Police are in attendance at a crash on the Stafford Road off-ramp on the Northern Motorway.
The crash involves three vehicles and was reported at around 2.40pm.
One person has been assessed as being in a serious condition and will be transported to hospital.
The off-ramp has been closed while the scene is cleared.
Northbound traffic on State Highway 1 is advised to take an alternative off-ramp in the interim.
Police appreciate motorists' cooperation this afternoon.
ENDS
Jarred Williamson/NZ Police