All Chipotle locations in New Jersey were affected by the payment card security breach reported on May 27 by the Denver-based company.

An investigation by Chipotle found that hackers used malware to access payment card data from cards used on point-of-sale (POS) devices at most of its 2,250 restaurants between March 24 and April 18.

The malware searched for “track data,” which can include a cardholder’s name, card number, expiration date and internal verification code, read from the magnetic stripe of a payment card as it was being routed through the POS device. There is no indication that other customer information was affected.

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For more information, Chipotle can be reached at 888-738-0534 between 9 a.m. and 9 p.m., Monday through Friday, and from 9 a.m. and 5 p.m., Saturday and Sunday.

A list of all affected restaurants is available on Chipotle’s website.