Residents of the Kearney area are being asked to check their debit and credit card accounts frequently after someone hacked into the computer network of a Kearney business.
Police have received several reports of people whose debit and credit card numbers have been stolen and are being used fraudulently.
Police investigator Dan Warrington says at least 50 victims have been confirmed and there are several hundred card numbers compromised.
Kearney police have asked the FBI to assist in the case. Police did not immediately identify the business from which the account numbers were stolen.
Most of the hacked accounts involve debit cards.
Many cardholders are being contacted by their debit or credit card companies, but Warrington says affected cardholders also should notify law enforcement.