Police report six people are injured following a three-car crash south of Manakau.
One person has serious injuries, and five others sustained moderate injuries.
The road is currently blocked and diversions are in place at Manakau and at South Manakau Road.
A helicopter has been dispatched to the scene.
Emergency services responded to the serious crash which involved three cars and occurred about 6:55pm.
Three people were reportedly trapped in vehicles.