A tomato recall due to risk of salmonella contamination has been designated as Class I, the U.S. Food and Drug Administration's highest warning level, the agency said. The FDA marked the tomato recall affecting three states as Class I, meaning there is a risk of "serious adverse health consequences or death," on May 28.

Walmart is pulling a popular produce item from store shelves in a dozen Texas locations after federal authorities flagged a potential health hazard. The company issued a voluntary recall of its Marketside Fresh Cut Cucumber Slices over concerns the product may be contaminated with Salmonella,

The recall of tomatoes distributed in three southern states was upgraded to the most severe warning the agency issues.