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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Monday will see another fine and dry day after a cloudier start for some.
Low cloud will gradually become confined to the coast allowing sunny spells in the afternoon.
Into the evening it will remain dry with the best of the clear spells in the west.