The city of Marietta is warning residents that a security breach may have comprised credit card information used on the city’s utility payment system.

In a news release sent out Tuesday night, city spokeswoman Lindsey Wiles said officials were told the information of customers who use Click2Gov to pay their bills may have been compromised during a recent security breach.

“Officials with Central Square Technologies have informed the city that they do not have any evidence showing that any Marietta customer transaction was, in fact, compromised,” Wiles wrote, adding that the warning was issued out of “an abundance of caution.”

Marietta customers who used Click2Gov to make credit card payments on the city’s website between Aug. 26 and Oct. 26 are most at risk but only if they entered their credit card information manually, Wiles said.

“Customers enrolled in the auto pay system prior to or after those dates and those who have paid in person, by mail, and over the phone during those dates were not affected,” she said.

The security breach has affected residents in more than 30 U.S. cities that use Click2Gov to collect payments, authorities said, and Central Square Technologies has agreed to offer free credit monitoring for all potentially impacted customers.

Letters are being mailed to any customer who may have been affected by the breach. In the meantime, anyone who believes their credit data was compromised is asked to call city employees at 770-704-1803.

In other news:

All the smoking rooms inside the airport will close at the start of the new year.