Derbyshire Fire and Rescue received a number of calls around 3.30pm today after reports of an explosion at a disused Thornton's factory in Belper.
People were reported to be inside the building at the time of the explosion but everyone is accounted for.
Fire crews are now damping down and the fire is under control.
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Bright or sunny spells across the region, especially in the morning but occasional showers are likely to develop in the afternoon.
A drier and brighter start to the day, but turning fairly cloudy by afternoon with showers or outbreaks of rain.
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