Walmart issues a massive recall in 20 states over the finding of potential foodborne illness contamination in a food staple.

The products are no longer available on shelves, but some people may have frozen bags of the contaminated vegetables.

Wal-mart has issued a recall of the 12-ounce bags in 20 states after testing uncovered listeria bacteria in one sample.

Two products sold in Walmart stores have been voluntarily recalled in recent weeks, with hundreds of locations carrying the items. Newsweek has contacted Walmart for comment via the contact form on its website outside of regular working hours.

If you do your produce shopping at your local Walmart, you might want to take a look at your recently purchased broccoli. The retail giant has recalled Braga Fresh, a brand of bagged greens, from Walmart stores in 20 states over listeria concerns.