ABERDEEN, S.D. (AP) — Police in Aberdeen are encouraging area residents to keep a close watch on their bank accounts after investigators removed a credit card skimming device from a gas station pump.

Police say the device was installed in such a way that people paying at the pump would not have been able to tell it was there. Police say they have checked several gas stations in town, and they are not ruling out the possibility that the skimming device they found Tuesday was used in several other locations.

Police would not identify the gas station were the device was found "to avoid an adverse impact" on the business.

The department says it is unclear how many accounts were compromised and how much money was stolen.

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