Two people have died after two cars collided north of Te Kuiti.
State Highway 3 has been closed after emergency services were called to the crash near Lees Block Road at 1:30pm on Sunday.
Two people have died and two have moderate injuries, St John ambulance says. A rescue helicopter has been sent.
Police have set up traffic diversions from SH3's intersection with SH37, Waitomo Caves Rd, and its intersection with Oparure Rd.
Motorists are warned to expect delays.