Aurora Police found two card skimming devices in the past few days.
Police found the first Saturday at the ATM inside the Corner Store at East Quincy and South Chambers Road.
They think someone placed it between Friday morning and early Saturday afternoon.
The second was found Tuesday on a pump at the 7-Eleven on Chambers Road between Smith and East 32nd.
If you used your card at either place, keep an eye on your credit and debit card statements.
If you notice anything odd, call your bank and report it to Aurora Police at 303) 739-6050.