The Food and Drug Administration issued an alert earlier this week about shrimp sold at Walmart over concerns that it could be radioactive. And now more shrimp are being added to the list.

The FDA has added more brands of frozen shrimp across nine states to its recall for possibly radioactive shrimp. Here's what you need to know.

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