Police and the fire service are attending a five-car nose-to-tail crash on Auckland's Southwestern Motorway, State Highway 20.
Five car crash on south-western motorway
The crash is blocking the right lane on motorway northbound just prior to Massey Rd.
Police say St John ambulance have transported four people to hospital - two people in a moderate condition and two with minor injuries.
NZTA is advising drivers to expect major delays in the area.