Fire crews were called to a blaze in the kitchen of a Northampton house.
The fire was caused by a cooker in a two-storey terraced home in Byron Street, Kingsley at about 8.30pm on Monday.
Firefighters used breathing apparatus, a thermal imaging camera to successfully fight the fire.
Although they found there was a smoke detector fitted, it was unable to warn the occupants because it was not in working order.
The house was left with a damaged cooker and kitchen cupboards, as well as smoke damage to both upstairs and downstairs.