A boy flown to Waikato Hospital in a serious condition after an alleged hit and run was described by family as having "tyre marks above his knees".
He suffered serious head injuries and abrasions to his limbs after being hit by a vehicle on Waingaro Rd in Ngaruawahia at about 1.30pm on Saturday.
An Auckland Rescue Helicopter Trust spokesman said the boy was a victim of an alleged hit and run accident.
A police spokeswoman confirmed the Serious Crash Unit was investigating but did not have any information to say the driver fled.
"Police were advised by ambulance of a collision between a car and a child. The child was responsive and airlifted to hospital by helicopter," the spokeswoman said.