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

Walmart has recalled frozen, raw shrimp sold in 13 states after federal health officials warned of potential radioactive contamination. The U.S.

The U.S. Customs & Border Protection (CBP) first detected the material in shipping containers at four ports located in the U.S., including Los Angeles, Houston, Miami and Savannah, Georgia. The discovery prompted the FDA's advisory and investigation.