Winnipeg police have arrested two suspects in connection with a debit-skimming operation at automated teller machines that allegedly raked in more than $160,000.

Officers have been investigating the case since fall 2009 and say they were informed of at least 38 incidents involving suspects tampering with ATM's to gather card data and personal identification numbers from customers using the machines.

The majority of the incidents involved stand-alone ATM's.

Suspects would approach the machine, cover the surveillance camera with paper and place an overlay on the card slot which would gather and store the customer's card data, say police.

The commercial crime unit worked with bank officials during a lengthy investigation on the case.

A 29-year-old man and a 39-year-old man, both from Winnipeg, face numerous charges, including more than 50 counts of possessing credit card data, say police.

Additional charges are expected. On Jan. 15, police announced details about arrests made in a separate debit-skimming operation.

Police advise people to pay close attention to ATM's. If anything seems ususual about the machine, police say do not use it.

- with a report from CTV's Susan Tymofichuk