COPPELL, TX (WCMH)–Cicis Pizza is cautioning customers after its systems were impacted by malware that compromised some credit and debit card information.

The chain said it began investigating in March after several Cicis restaurants reported that their point-of-sale systems were not working properly.

“The report revealed that payment card information may have been compromised from payment cards used at some Cicis restaurants,” the website said. “The vast majority of intrusions began in March of 2016 and the threats were eliminated on a store by store basis through July of 2016.”

Some restaurants had data breaches in 2015, as well.

Stores impacted include locations in Mansfield and Dayton. Cicis said all the malware has been removed from company computers.

“While we believe most of the breaches were remedied within a few weeks of the intrusion, out of an abundance of caution we are not declaring some restaurants as threat-free until they were reviewed by our forensic analyst this month,” the chain said in a statement.

More details can be found here.