Three patients in a moderate condition were also transported to Rotorua Hospital.
A further 26 patients in a “minor condition” were assessed and did not require transport, a St John spokesperson said.
Five ambulances, two helicopters, a rapid response Unit, two operations managers, two helicopters and a major incident support vehicle were sent to the scene.
Police have been approached for comment.
Jaime Lyth is a multimedia journalist for the New Zealand Herald, focusing on crime and breaking news. Lyth began working under the NZ Herald masthead in 2021 as a reporter for the Northern Advocate in Whangārei.