"A post mortem was completed in Auckland today to determine how Mr Scott died. It will be a number of weeks before those findings are available," he said.
"Our staff will be continuing to work in and around the scene over the coming days, in conjunction with the Fire Service, to fully understand how the fire was caused and provide answers for Mr Scott's family."
The building owner, who asked not to be named, said the middle part of the building had been gutted but from the front and back it looked the same.