The FDA has expanded its recall of frozen shrimp over potential radioactive contamination, now affecting more U.S. states.

Walmart is recalling three of its Great Value brand frozen shrimp products after U.S. agencies uncovered the presence of radioactive material in one sample of breaded shrimp.

The U.S. Food and Drug Administration asked Walmart to pull three lots of Great Value brand frozen shrimp from stores after federal officials detected Cesium-137, a radioactive isotope, in shipping containers and a sample of breaded shrimp imported from Indonesia.