A streak of blood marks the road where an 18-year-old fell off the back of a ute in Welcome Bay last night.
The male teenager sustained critical injuries and is in Waikato Hospital's Intensive Care Unit.
A resident who lives on Waitaha Rd arrived home soon after the incident, which happened around 8.45pm.
He said he saw people congregated around an unconscious body, but emergency services had not yet arrived.
"I wondered what on earth the story was; I wondered whether somebody was laying on the road and got hit. But no, that's not what happened."