A house in Tower Hamlets was damaged after items were left in contact with a hot halogen lamp.
A total of four fire engines and around 25 firefighters tackled the house fire in Chandlers Mews, Isle of Dogs, on Saturday, January 21.
The London Fire Brigade was called at 10.22am and the fire was under control by 11am.
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Three people left the building before firefighters arrived and were assessed on scene by London Ambulance Service crews.
The third floor of the terraced house was left damaged.
The fire is believed to have been accidental and caused by items coming into contact with a halogen lamp.
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A brigade spokesperson said: "Lightbulbs can get incredibly hot and can set fire to combustible materials.
"It's important to keep them away from anything that might catch fire such as books, clothing, sheets and curtains."
Fire crews from Millwall, Shadwell, Whitechapel and Bethnal Green fire stations attended the scene.
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