General Mills has recalled boxes of original Cheerios and Honey Nut Cheerios that the company said were incorrectly labeled “gluten free.”

“I am embarrassed and truly sorry,” wrote Jim Murphy, president of the company’s cereal division, in a blog post on Monday following the announcement. “We sincerely apologize to the gluten-free community and to anyone who may have been impacted.”

Below are the key facts in the Cheerios recall: