CINCINNATI (AP) -- Kroger is recalling spinach sold at grocery stores in 15 states due to possible Listeria contamination.

The Kroger Fresh Selections Tender Spinach was sold in 10-ounze bags and had a "best if used by" date of Sept. 16. It has a universal product code, or UPC, of 011110916495. The grocer said Wednesday that if customers did buy the recalled product, they should return it to stores for a full refund or replacement.

No illnesses have been reported. Listeria can lead to severe illness for women who are pregnant or people who have a weakened immune system.

The Kroger Co., based in Cincinnati, said the product was sold in Ohio, Kentucky, West Virginia, Virginia, Georgia, Alabama, North Carolina, South Carolina, Tennessee, Michigan, Indiana, Illinois, Missouri, Kansas and Nebraska. The recall involves its Kroger, Jay C, Owen's, Pay Less, Scott's, Food 4 Less, Dillons, Baker's and Gerbes stores in selected states.

The California supplier, NewStar Fresh Foods, said that recall is being done out of an abundance of caution after a single package yielded a positive test result by the Ohio Department of Agriculture.