One person has died and four are critically injured following a two-car crash near the holiday hotspot Waitomo Caves in Waikato.
St John was notified of a motor vehicle incident in on State Highway 3 near Hangatiki at 12:44pm, a spokesperson said.
St John responded with three helicopters, three ambulances, one rapid response unit and one manager to the scene.
Initially, two patients in critical condition were airlifted to Waikato Hospital after being assessed and treated, the spokesperson said.