A truck has ploughed into a Porsche dealership, causing multiple injuries and writing off several luxury cars in the Auckland suburb of Newmarket.
Emergency services were called to the crash involving at least seven vehicles on Great South Road at about 11:30am.
Inspector Lou Alofa said the driver of a truck and trailer unit had lost control and hit five parked cars.
Multiple injuries to people in the parked cars had been reported and the Fire Service was working to free a trapped person, Mr Alofa said.
Local worker Paul Scotting said the scene was "like a plane crash".
He said it appeared the fully laden truck and trailer had hit a van doing a U-turn on the busy arterial road.
The truck and trailer then lost control and smashed into another truck unloading a Porsche at the Newmarket dealership of the luxury car manufacturer, Mr Scotting said.
That Porsche had then tipped off the truck into another car at the yard, he said.
"It's carnage," he said.
Mr Scotting said the van involved in the initial collision had been shunted across the road into the side of a parked BMW.
About 10 police cars along with four fire engines and multiple ambulances were at the scene.
Hundreds of people had gathered near the Porsche dealership.
There was no information on injuries sustained by the people in the parked vehicles or on the condition of the driver of the truck and trailer unit, Mr Alofa said.
The crash was causing major traffic delays.