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.
More top news
Wasps has launched a £35 million fundraising drive as a retail bond listed on the London Stock Exchange.
Staff at Dogs Trust Shrewsbury in have their fingers crossed that an elderly doggy duo will soon find a home together.
A rather cold and unsettled week.