A motorycyclist has been airlifted to hospital after a crash closed State Highway 2 at Putorino, about 58km north of Napier.
A St John ambulance spokeswoman said one person was in a critical condition and had been airlifted to Waikato Hospital after the 10.30am crash.
Motorists were asked to avoid the area as the road was blocked at the accident scene, about 2km north of Matahorua Road.
At 1.20pm, police advised that the road remained closed while police crash investigators examined the scene.
A police spokeswoman said police were notified of the serious crash involving a motorbike about 10.30am.