Kellogg says a criminal investigation is under way after a video surfaced online showing a man urinating on one of its factory assembly lines.

The company says it learned of the video Friday and immediately alerted authorities. It says the criminal investigation is being conducted by the Food and Drug Administration.

The graphic video shows a man urinating on an assembly line, then panning to a sign with the Kellogg logo. Kellogg said its own investigation determined the video was recorded at its Memphis, Tennessee, factory in 2014. It says any products that would have been affected would be past their expiration dates.

The products that were potentially impacted include Rice Krispies Treats, granola clusters used in some products and puffed rice treats that Kellogg no longer makes.