The Georgia-based company Alma Pak International LLC is voluntarily recalling 400 30-pound boxes of organic blueberries due to a high risk of listeria contamination, according to the U.S. Food and Drug Administration. The recall was initiated on June 9 and categorized as a Class I recall by the FDA on July 1.

There’s a “reasonable probability” the recalled fruit will cause serious illness or death, the U.S. Food and Drug Administration warns.