The Minnesota Department of Agriculture says there have been no reports of illness from the bacterium and that Coon Rapids-based Parkers Farm Acquisition is cooperating with the investigation.
The company has issued a voluntary recall of several products with various sell-by dates. Consumers who bought these products are urged to return them to the store or throw them away.
The products are distributed nationwide under the Parkers Farm, Parkers, Happy Farms, Central Markets, Hy-Top, Amish Classic, Say Cheez, Win Schuler and Bucky Badger labels.
These items were sold at several stores, including Hy-Vee, Cub, Rainbow, Byerly's, Lunds, Target, Whole Foods, Price Chopper, Nash Finch, Costco, ALDI, Wal-Mart and Brookshire stores.