A 35-year-old man has been arrested on suspicion of committing arson with intent to endanger life following a fire at a house in East Sussex.
Police said emergency services were called to Bohemia Road, St Leonards, at about 02:00 GMT on Sunday following reports of a fire at the property.
The arrested man lives locally and remains in police custody.
East Sussex Fire and Rescue Service said three appliances were sent to tackle a fire in the roof.
Fire service investigation officers and a dog team remained at the scene on Sunday afternoon.