By Sandra Rose  | 

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The U.S. Food & Drug Administration (FDA) has announced hundreds of reports of gastrointestinal illnesses linked to boxes of General Mills Lucky Charms cereal.

On Monday, the FDA announced an investigation into reports that Lucky Charms cereal is contaminated with bacteria or fungus that causes gastrointestinal problems.

Reported symptoms include stomach cramps, diarrhea, nausea and vomiting after consuming the sugary marshmallow and oats cereal.

Over 3,000 reports of gastrointestinal issues were made to consumer website since 2021.

General Mills denies the sweet cereal is the source of the reported diarrhea outbreaks. The company said it is unable to find a link to the reports in their factories where the cereal is made.

Reports are also coming in from Europe where the cereal is sold under the Lucky Charms brand.

So far, General Mills is not issuing recalls of the popular cereal or offering refunds at the site of purchase.