Bettendorf residents, be on alert.

KWQC reports that scammers are calling residents, claiming to be law enforcement.

The scam? A complicated ruse to get victims to purchase pre-paid debit-cards in order to pay off an "arrest warrant."

The suspects either asked for phone numbers of the victims' coworkers and had specific names, under the guise of needing to serve a subpoena, or told the victims a warrant had been issued for their arrest for missing jury duty. In order to cancel the warrant, the victims were told to purchase green dot (pre-paid debit) cards for a specific dollar amount, then call the number back with the activation numbers.

Obviously, most police departments will not contact you over the phone, nor will they attempt to solicit payments in that way. The Bettendorf Police Department says if you suspect the person calling you is a scammer or if you're unsure, call 911.