Some of America's most well-known hotel chains may have been the target of a computer hack.

FOX's Jon Decker has more from Washington:

Hyatt, Sheraton, Marriott and Westin hotels in 10 states and the District of Columbia may have been targeted by hackers for months.

The operator for these hotels says that malware put into place in at least 20 locations may have collected names, card account numbers, card expiration dates and verification codes from early December through late June.

As a result, anyone who used a credit card at any of these hotels should review their account statements and look for discrepancies or unusual activity, both over the past several months and going forward.

In Washington, Jon Decker, FOX News.