The Food and Drug Administration is warning the public not to eat, sell or serve certain frozen shrimp that's sold at Walmart stores over concerns it may be radioactive.

So far, no products that tested positive for Cesium-137 (Cs-137) have reached U.S. stores.

The product is sold in 13 states: Alabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Missouri, Mississippi, Ohio, Oklahoma, Pennsylvania, Texas, and West Virginia.

What we know:

The FDA is investigating reports of Cesium-137 (Cs-137) contamination in shipping containers and frozen shrimp from PT. Bahari Makmur Sejati (BMS Foods) in Indonesia.

RELATED: Sugar cookies sold at Target recalled over potential wood contamination

U.S. Customs & Border Protection (CBP) found Cs-137 in containers at four U.S. ports: Los Angele

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