US-based speciality food retailer Trader Joe’s has expanded its voluntary recall to include the company’s own-branded sliced green apples with all natural peanut butter, according to a statement by the Food and Drug Administration (FDA).

The peanut butter used on the fresh-cut apple offer was manufactured by Peanut Corporation of America (PCA), which is the focus of an ongoing salmonella investigation.

As part of the ongoing PCA investigation and as a precaution, Trader Joe’s has already voluntarily recalled three private label items including: Peanut Butter Chewy Coated & Drizzled Granola Bars, Nutty Chocolate Chewy Coated & Drizzled Granola Bars and Sutter’s Formula Cookies.

The Sliced Green Apples With All Natural Peanut Butter, Peanut Butter Chewy Coated & Drizzled Granola Bars and Nutty Chocolate Chewy Coated & Drizzled Granola Bars were sold at Trader Joe’s stores nationwide.

The affected Sutter’s Formula Cookies were sold only in Trader Joe’s stores located in southern California, Arizona, New Mexico and Nevada.

At this time, the FDA claims there have been no confirmed cases of illnesses or adverse affects affiliated with these products.

“At Trader Joe’s we take the safety of our customers and the integrity of our products very seriously,” the retailer said. “Customers who have purchased any of these items (any date code) are urged to return them to any Trader Joe’s for a full refund. Customers with questions may contact Trader Joe’s Customer Service at (626) 599-3817.”

Trader Joe’s is a privately held chain of specialty grocery stores headquartered in Monrovia, California, with some 315 stores located mostly in southern California, as well as 24 other states and Washington DC.