Note: This story has been updated with additional information.

The United States Department of Agriculture Food Safety and Inspection Service has issued a recall of 15 million pounds of Campbell Soup's SpaghettiOs with Meatballs due to "possible underprocessing."

The following products are being recalled: 14.75-ounce cans of "SpaghettiOs" with Meatballs, with the product code "U5" on the bottom of the can. 14.75-ounce cans of "SpaghettiOs" A to Z with Meatballs, with the product code "4N" on the bottom of the can. 14.75-ounce cans of "SpaghettiOs" Fun Shapes with Meatballs (Cars), with the product code "KS" on the bottom of the can.

The products subject to recall have a "use by" date between June 2010 and December 2011 and also bear the establishment number EST 4K ink-jetted on the bottom of each can.

Questions are being referred to Campbell Soup's consumer hotline: (866) 495-3774.