The cause of a shed fire that spread to a house in east Christchurch on Friday has been determined.
Fire risk management officer Wayne Hamilton said the blaze at the Ottawa Rd property in Wainoni is believed to have been caused by an electrical fault in a faulty multi-box.
Five appliances from the Anzac station were called to the fire about 11.39am.
Hamilton said it serves as an important reminder about making sure multi-boxes are used safely.