A petrol tanker has rolled over a bank on State Highway 2 in the Tararua district and is leaking large volumes of fuel over the road.

Fire crews were called to the scene around 6.40pm upon receiving reports the vehicle had struck a bank and rolled on State Highway 2.

Police also rushed to the scene near Anzac Park, around 3km north of Norsewood, around 7pm.

A spokeswoman said the driver wasn't suffering any major injuries.

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Fire and Emergency NZ spokesman Mike Wanoa said it appeared there were large volumes of petrol leaking from the vehicle.

"We've got crews from Norsewood, Dannevirke and Hastings attending, with water tankers and the Hazmat unit."

The road had been closed between the Jens Anderson Rd and Kopua Rd as a result of the spill.