Police are responding to a crash involving a motorbike and a vehicle, says a police spokesperson.

"It happened on Te Poi Road, near the intersection with State Highway 29, about 1:20pm.

"One person has suffered critical injuries and will be airlifted to hospital.

"The Serious Crash Unit has been advised and Te Poi Road has been closed while emergency services work at the scene.

"Motorists are advised to avoid the area and expect delays."