More than 246,000 pounds of frozen breakfast wraps were recently recalled after customers complained of finding “small rocks” in the food, federal inspectors announced.

Ruiz Food Products, the manufacturer of El Monterey Egg, Potato, Bacon & Cheese Sauce Breakfast Wraps, received a report of one injury possibly associated with consuming the product, the US Department of Agriculture’s Food Safety and Inspection Service said in a statement Friday.

In total, the company has received three customer complaints, the USDA said.

The wraps, which come in packs of eight, were produced this past Jan. 17 and 18, and are “best if used by” those same dates in 2020, officials said. Lot codes are 19017 and 19018, and the packages bear the establishment number EST. 17523A.

The items were shipped to retail locations nationwide.

The problem was discovered on Friday, and the company is continuing to investigate how the rocks ended up there.

“Consumers who have purchased these products are urged not to consume them,” the USDA said. “These products should be thrown away or returned to the place of purchase.”

Ruiz Foods is based in Denison, Texas, and is known for its production of frozen Mexican food.