The investigation found the mirror received uninterrupted sunlight all morning
Sunlight reflecting on a magnifying mirror caused a flat fire which left a couple homeless, a fire service investigation has confirmed.
The flat was "completely alight" with the fire spreading to the roof when crews arrived at High Street in Walton-on-the-Naze, Essex, on 2 May.
Essex fire service said the blaze was started by sunlight reflecting from the mirror on to a wooden window seal.
The couple were unharmed but they lost almost all of their possessions.
People are being warned not to leave similar mirrors in direct sunlight near "combustible materials"
Assistant divisional officer Simon Dedman said: "This incident is unusual but by no means the only time a fire has started like this.
"It was a two sided mirror with one side magnified and that was the side facing the sun."
