A large fire that damaged 10 motorhomes and an office in Auckland on September 3, 2020, was so destructive the cause cannot be determined, Stuff reports. In a fire investigation report, obtained under the Official Information Act, specialist fire investigators Robert Watson and Emma-Jane Goldsworthy were unable to determine the exact cause because of extensive damage which limited entry to the building. However, it is believed that the cause could be laundry, with the fire likely starting from an electrical event or “spontaneous combustion” of laundered materials.