A Belper takeaway was robbed of its takings during a break-in on April 3.
A ground-floor window at Belper Balti on Market Place was forced open some time between 12.30am and 5pm.
Money, an industrial blender and a meat grinder were taken during the raid.
On the same day, between 4pm and 5pm, a Dell laptop was stolen from an unlocked car on Sherbourne Drive.
And on April 4, a Ford Focus, registration HD52XEW, was stolen from a car park on Bridge Street some time between 12.30am and noon.
Anyone with information about the three crimes should phone police on 101.