Some frozen shrimp sold at Walmart under the Great Value label are at risk of radioactive contamination and shouldn't be consumed, according to a warning from the U.S. Food and Drug Administration.

More packages of frozen shrimp potentially affected by radioactive contamination have been recalled, federal officials said Thursday.

"The FDA is actively investigating reports of Cesium-137 (Cs-137) contamination in shipping containers and frozen shrimp products processed by PT. Bahari Makmur Sejati (doing business as BMS Foods) o...