Some packages of Great Value frozen shrimp sold at Walmart are at risk for potential for Cesium-137 contamination, the FDA says.

The FDA detected Cesium-137, a radioactive isotope, in one shipment of Great Value frozen raw shrimp to Walmart. It said the affected shipment wasn’t sold.

Walmart has recalled some of its shrimp products in the US after radioactive material was detected in a shipment of seafood. The US Food and Drug Administration (FDA) warned the public not to eat frozen shrimp sold under Walmart's Great Value label, as it could have been exposed to a dangerous isotope in shipping containers.