A person has been seriously injured after a car rolled at the intersection of State Highway 1 and Kentucky Rd in Karapiro this afternoon.
Police were notified of the single-vehicle crash at 2.31pm.
Initial reports were that a person was trapped and the Fire and Emergency NZ were in attendance, a police spokesperson said.
A St John spokesperson said three ambulances and a rescue helicopter were at the scene. Two patients were being treated and one was in a serious condition.
Motorists are asked to avoid the area or expect delays.