Brant OPP say that debit and credit cards in a wallet stolen from a vehicle parked on Church Street in Paris were used at various businesses in the Hamilton area.
The theft occurred at about 3 pm on April 16.
Police remind residents to lock their vehicles and remove all valuables.
Anyone with information about the incident is asked to call police at 1-888-310-1122.
To remain anonymous, call Crime Stoppers at 1-800-222-8477 (TIPS) or leave an anonymous online message at www.crimestoppers-brant.ca, where you may be eligible to receive a cash reward of up to $2,000.