(CBS/AP) – Whole Foods Market’s CEOs apologized Thursday for pricing issues at its stores, a week after a New York investigation found that the natural food grocer routinely overcharged for prepackaged fruits, vegetables and deli meats.

In a YouTube video, co-CEOs John Mackey and Walter Robb said that the mistakes were unintentional. They said the company will increase its training at stores around the county to fix any pricing issues

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“Straight up, we made some mistakes. We’re going to own that,” said Robb.

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Mackey said they would improve their training in New York and around the country. “We want to be perfect,” he said.

Last week, New York’s Department of Consumer Affairs said it was expanding its investigation after finding that Whole Foods stores in the city regularly ripped customers off, including overcharging $14.84 for a package of coconut shrimp and $4.85 for eight chicken tenders.

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