Helicopters join firefighters tackling large Tongariro Forest Park blaze

Firefighters and helicopters are tackling a large fire in the Tongariro Forest Park.

Fire and Emergency New Zealand said the vegetation fire, reported at 3.15pm, has affected State Highway 47, with a large build-up of traffic being reported.

Motorists are advised to avoid the area or delay travel until detours are available.

Crews from six fire brigades and a command unit are at the scene or on their way there, Fire and Emergency said.

Two helicopters with monsoon buckets are assisting and a third is on the way.