INDIANAPOLIS (AP) — A nationwide hotel operator is investigating a suspected data security breach that may have compromised credit card and debit card information of customers who stayed at properties in eight states last year, the company announced Monday.

White Lodging Services Corp. said in a statement that the suspected breach affected cards used at hotel restaurants and lounges between March 20 and Dec. 16 at 14 properties it manages. The front desk system also was affected at one property, according to White Lodging, which did not say how many customers may have been affected.