A serious head-on crash has closed State Highway 2 near Mangatawhiri, south of Auckland.
Seven people were injured in the crash that happened around 2.45pm.
Four people are in a serious condition, two people have moderate injuries and one person suffered minor injuries.
All seven have been transported to Middlemore Hospital.
Police say the crash has closed SH2 just east of the intersection with SH1 at Bombay.
Traffic diversions are in place along Koheroa Road and Island Block Road and police say heavy vehicles must use Island Block Road or other suitable routes.
Motorists returning to Auckland from the Coromandel or Bay of Plenty are being encouraged to either delay their journey or use alternative routes away from the crash.