Photo of Taco Bell employee licking taco shells goes viral

(ABC News/Facebook)

June 3, 2013 9:08:15 PM PDT
Taco Bell is promising to take swift action after a Facebook photo of an apparent employee licking a stack of taco shells went viral Monday.

Taco Bell, owned by Yum! Brands, says it believes the photo is a prank but is investigating in which store the photo was taken. A press release posted on the company website says the taco shells were in the process of being thrown out after being used for training.

The statement says the taco shells were "absolutely not" served to customers.