Walmart has recalled frozen, raw shrimp sold in 13 states because federal health officials say it could have potential radioactive contamination.

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

Still, the FDA recommends that Walmart recall certain lots of Great Value raw frozen shrimp as a precautionary measure. The recalled shrimp were sold at Walmart stores in the following states—Alabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Missouri, Mississippi, Ohio, Oklahoma, Pennsylvania, Texas, and West Virginia.