Sioux-Preme Packing Co., headquartered in Sioux Center, Iowa, is voluntarily recalling 1,110 pounds of pork products, reports The products may contain foreign material, according to USDA's Food Safety and Inspection Service.

The products under recall are 110 pork shoulder butts. At issue is the fact that the butts may contain small electronic transponders, which were inserted into the shoulders of the hogs at a production facility. The animals were inadvertently shipped to slaughter, reports

The hogs were slaughtered on Sept. 10, with products being shipped to further-processing facilities in Colorado, Iowa and Mexico.

FSIS has not received any reports of illness or problems associated with the pork products. Sioux-Preme reported the issue to FSIS on Sept. 17.