An 89-year-old woman was alarmed to discover that her purse had been stolen while shopping in Matlock.
The purse had been in her bag while she was in Wilkinsons, in Bank Road, on Saturday, however by the time she got to Age UK it was missing.
The woman, from Wirksworth, made the discovery at about 10.30am and called the police immediately.
The purse contained some cards and a quantity of cash.
Anyone with information is asked to contact Derbyshire Police on 101.