A battery-powered hoverboard has been blamed for a fire that damaged a child's bedroom at a house in Kaitaia on Sunday night.
A Kaitaia Fire Brigade spokesman said the damage would likely have been much worse but for the residents' quick response.
The fire was well away when it was discovered. The residents closed the door and fought the flames with a garden hose through a window until the brigade arrived.
"They did everything right, and the fire was contained to that room," Station Officer Ross Beddows said.
The source was found to be a hoverboard that was leaning against a wall just inside the door. Mr Beddows said it had been used by its 13-year-old owner a few hours earlier and had self-ignited, setting fire to the wall, carpet and the duvet.