Three teenagers had to be cut from a car after it collided with a tree in a serious crash near Turangi.
Emergency services rushed to the scene at 4pm on Monday on Te Rangi Tautahanga Rd near the intersection with Hirangi Rd in Turangi.
Police said a grey Subaru Impreza - with three teenage boys from Turangi inside - crashed into a tree in the incident.
All three were trapped inside, in a critical condition, and had to be cut out by the Turangi Fire Service.
Three helicopters attended the scene and the injured teens were flown to Waikato Hospital.
The Serious Crash Unit is investigating and is calling for any witnesses to the crash to come forward.
Police said any information may be relevant, no matter how insignificant it may seem.
Anyone with information is asked to contact Nick Weight from the Taupo Road Policing Group on (07) 378 6060.