An incident at an event at Meeanee Speedway in Napier that saw a young person taken to hospital in an ambulance will be "fully investigated".
A St John spokeswoman said a person was on Saturday night taken to Hawke's Bay Hospital in a moderate condition after the incident at the track.
A spectator in the crowd claimed a child four rows down from him was hit in the head by a spring, which had flown off a stock car.
The spectator described it as a "freak accident", but said the events that led to it, and the official response, needed to be reviewed closely.