The incident occurred at the Arby's restaurant on N. West Avenue in Jackson, Mich., on May 11, just after Hart and his mother had gone to the establishment for a quick bite after school.
Health officials said a worker likely left her area after cutting her finger on a meat slicer, according to the Jackson Citizen Patriot. Other employees, allegedly unaware of their co-worker's injury, continued with their regular duties. Once informed of the incident, the restaurant team stopped food production and cleaned and sanitized the restaurant.
Hart is doing fine, after getting his blood drawn and getting prescribed medicine at the hospital. News of the fast food surprise comes just days after a Reddit user posted an image of what seems to be a deep-fried cockroach in his McDonald's hash brown.
The customer said he brought the item to the store manager, who then offered him a voucher for a free breakfast.
Hart's discovery calls to mind an incident said to have occurred at a Wendy's in San Jose, Calif., in 2005.
Anna Ayala claimed to have bitten into a severed finger she found in her bowl of chili. After she and her husband confessed the scheme was a hoax, the woman was sentenced to nine years in jail. However, Ayala was released after serving four years and was subsequently banned from ever entering the establishment again.