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