A 31-year-old man remains in a critical condition in Auckland Hospital after falling from a ute near Ōpua.
Senior Constable Warren Bunn, of the police Serious Crash Unit, said at least one person was sitting in the tray of a ute as it travelled south on State Highway 11 about 3.50am on Saturday.
The man fell off near the intersection with Te Raupo Rd, about midway between Ōpua and Kawakawa, suffering critical injuries when he hit his head on the road.
The ute stopped and another motorist, who saw the man lying on the road as he was heading north around the same time, called 111.
All occupants of the vehicle had been spoken to.