An Indiana candymaker is recalling packages of chocolate-covered marshmallow eggs over Salmonella concerns.

Zachary Confections, based in Frankfort, announced the voluntary recall Wednesday after a sample taken during routine testing of the Easter treats revealed “the potential for Salmonella contamination,” according to the U.S. Food and Drug Administration.

The recall includes 5-ounce packages of the eggs sold in white egg crates with purple, green and yellow lettering, carry the product number 31-797 and the best buy date of Feb. 14, 2014.

The packages were shipped from the Frankfort factory Feb. 21 and 22, and have been distributed to stores in Iowa, Minnesota, North Dakota, South Dakota and Wisconsin, according to the FDA.