Radioactive shrimp. That’s not a typo. That’s not clickbait. That’s what’s going down at Walmart right now. The retail giant has issued a multi-state recall for several lots of its Great Value frozen shrimp after the FDA flagged potential contamination with Cesium-137 — a radioactive byproduct most commonly associated with nuclear reactors and atomic bombs.

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

Update, August 22, 7:04 am EDT: On August 21, the FDA expanded its recall to include raw and cooked frozen shrimp products sold by Southwind Foods, LLC. The FDA and Southwinds Food said that the company is “voluntarily recalling a limited quantity of frozen shrimp” due to possible contamination with Cesium-137.