A KFC worker has been fired from her job after being accused of posting a picture of herself appearing to lick a tub of mashed potatoes on Facebook.

The photos were taken at a KFC restaurant in Johnson City, Tennessee.

KFC told The Johnson City Press that no customers were served any of the food that was seen in the pictures.

"Nothing is more important to KFC than food safety," KFC spokesman Rick Maynard told the paper. "As soon as our franchisee became aware of the issue, immediate action was taken."

The worker who snapped the photos was also fire, KFC said.