Motorists have been warned to expect delays following a six-car nose-to-tail crash on the Southern Motorway.
The NZ Transport Agency tweeted just before noon that a crash had occurred in the southbound lanes of State Highway 1 between Hill Rd and Takanini.
The right lane was blocked as a result.
"#ExpectDelays if you are travelling in this direction."
A police spokeswoman said just after 1pm that four cars were able to move on, but one required a tow.
"The road is now clear but the traffic backlog is still clearing."
There were no reports of injuries.
The stretch of highway is part of the $268 million Southern Corridor Improvements Project between Manukau and Papakura.
Additional lanes are being constructed in both directions and the Takanini interchange is being upgraded as part of the project.