There are 17 Whole Foods locations in New Jersey. Others are in Charlotte, Greensboro, Winston Salem, Burlington and Asheville.
Amazon recently purchased Whole Foods.
There are four Whole Foods stores in Utah.
Whole Foods said it's working with a cybersecurity firm and plans to investigate who is behind the cyber attack. Amazon recently lowered its prices on "a selection of best-selling" Whole Foods products and announced that Prime will soon become the grocery chain's customer rewards programs. It's unclear how many restaurants Whole Foods has.
"The company's investigation is ongoing and it will provide additional updates as it learns more". Not much is known about the possible breach at this time, aside from the fact that it affects payment cards.
But the company does state that the systems that were hit do not connect to Amazon.com, which recently acquired Whole Foods for nearly $14 billion.More news: Star Trek: Discovery is out and it looks glorious
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Rep. Diana DeGette of Colorado, a frequent and vocal proponent of post-breach consumer protection, told Gizmodo on Friday that Whole Foods must expedite its disclosure process if it means to help customers protect themselves from potential fraud.
Major corporations that have faced large data breaches in recent years include Yahoo, Verizon, Walmart, Anthem, Myspace and LinkedIn.
The company said payment information at certain venues, including taprooms and full table-service restaurants inside some of its stores, was accessed.
World Foods has said that the stores impacted have restaurants on site and because of this an alternate checkout system.
Amazon did not return a request for comment.
The investigation is still underway and not much else is known, including when the hack started and what information was stolen.