Firefighters are still battling a huge blaze at a scrap metal yard in South Auckland, the third fire at the same site in 11 years.
A 12m-high pile of 1600 tonnes of scrap metal, including old car parts, roofing and tyres, is burning at Sims Pacific Metals on James Fletcher Drive in Favona.
The fire was first reported at 1.56am on Wednesday and at its peak the fire had flames "as high as warehouses".
Firefighters expect the blaze to continue burning into tomorrow night.
James Fletcher Drive was expected to be closed until midday at least.
In 2007 there was another blaze at the site, thought to be started by exploding aerosol cans.
Two excavators were currently breaking down sections of the scrap heap at a rate of 20 tonnes an hour and pouring water on the fire throughout Wednesday and overnight, a Fire and Emergency spokesman said.
At its peak over 80 firefighters and 20 fire engines were in attendance.
There has been no reported injuries.
The smoke from the fire resulted in the self-evacuation of several businesses in close proximity to the blaze, as well as one of the country's most prestigious private schools.
Students and staff were instructed to head home from King's College around midday today, as dozens of firefighters continued to battle the out-of-control fire nearby.
The nearby Sir Douglas Bader Intermediate School had no plans to close the school on Wednesday or on Thursday, a spokeswoman said.
The fire was covering an area 100m by 70m, and was 12m high in some places, Fire and Emergency New Zealand assistant area commander Auckland City Barry Fox said.
"Before the cars were shredded they were drained of fuels and oils, but there are still some minor explosions going off, in tanks, bits and pieces within the scrapheap."
Auckland Emergency Management were encouraging people living in the area to keep out of the smoke, stay inside and shut all doors and windows and close down ventilation systems if they could.