Motorists on Auckland's Southern Motorway are being warned to avoid the area or expect delays after a spillage late this afternoon.
Police and the Fire Service are on their way to the site, near the Takanini off-ramp in South Auckland.
A Fire Service spokeswoman said just after 5.30pm they were heading to the scene, while police said they too were on their way there.
The NZ Transport Agency warned motorists of long delays just before 5.30pm.