Las Vegas-based Affinity Gaming, which controls several casino properties in southern Nevada, said a breach was made of its system involving credit and debit cards.
According to Affinity Gaming, an unauthorized intrusion of the company's card processing system took place between March 14 and Oct. 16 this year.
The company's gaming properties include the Silver Sevens Hotel and Casino in Las Vegas, Rail City Casino in Sparks and Primm, NV properties, Primm Valley Resort & Casino, Buffalo Bill's Resort and Casino and Whiskey Pete's Hotel and Casino.
The gaming group also holds properties in Iowa, Missouri and Colorado.
The Primm Center Gas Station in Primm was also affected, with a date of intrusion that ended on Nov. 29.
As part of the alert, the company urged people who used credit and debit cards at the properties to review their account statements, notify credit card companies and monitor credit reports.
A confidential inquiry line was also made available from Monday through Friday, 8 a.m. to 6 p.m. PT at 1-877-238-2179.
Stay tuned to FOX5 for the latest on this developing story.
Copyright 2013 KVVU (KVVU Broadcasting Corporation). All rights reserved.