Lee Baker from West Midlands Fire Service said that, following further investigations by the fire investigations officer, they have come to the conclusion that the cause of the fire was accidental.
More than a hundred firefighters spent the night tackling the blaze at a furniture warehouse in Sparkbrook, Birmingham.
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Dry with clear spells this evening, allowing temperatures to quickly fall close to freezing.
Clear spells across southern and eastern parts will lead to a chilly night with a local frost possible.
A video has been posted online by students at Nottingham Trent University showing an alleged intruder stuck in a window of a building.