The fire broke out at Global Metal Solutions on Hunua Rd, Papakura, about 8am on Wednesday, sending plumes of smoke billowing across the suburb right into the afternoon. Residents were warned to stay indoors, but after the smoke died down in the afternoon, the emergency alert was stopped. A spokeswoman for Fire and Emergency New Zealand (FENZ), said the exact cause of the fire was not yet known but there had been fire investigators on scene.
READ MORE: A few fire crew would return to the site on Thursday morning, she said, but only to collect gear which had been left at the scene.