A broccoli product sold at Walmart in Michigan was under recall. Now the FDA says the product may be considered deadly. Here's what to know.

The U.S. Food and Drug Administration upgraded the classification of recalled broccoli sold at Walmart originally issued in December to its highest recall category, according to the agency’s updated report.

A previous recall of broccoli sold in Walmart stores in the US has been labelled as a "Class I" recall by the FDA.