Walmart is recalling certain frozen shrimp products sold under its Great Value brand after the U.S. Food and Drug Administration (FDA) warned that the seafood may be at risk for radioactive contamination. The frozen shrimp were imported from Indonesian company PT. Bahari Makmur Sejati and sold in 13 states, the FDA said.

The Food and Drug Administration is warning consumers not to eat certain frozen shrimp products sold at Walmart, citing the risk of possible contamination with Cesium-137 (Cs-137), a radioactive isotope.