A 55-year-old man has been arrested after a "potentially volatile substance" was discovered at a flat in Newhall, forcing the evacuation of up to 200 people.
Derbyshire Police said the evacuation was a precaution, and residents would be allowed to return to their homes as soon as possible.
More top news
A summary of the key announcements from Chancellor George Osborne's Autumn Statement and Spending Review.
All cuts have consequences, warns Joel Hills, as he examines which assets may be up for sale if George Osborne decides 'everything must go'.
Tests revealed she was suffering from secretory carcinoma - which affects just "one in a million people" diagnosed with the breast cancer.