The problem was discovered through a consumer complaint brought to the attention of H-E-B, one of AdvancePierre Foods' retail customers. The consumer noted metal fragments found on the outer surface of a ready-to-eat beef patty product. The problem may have occurred due to production equipment problems associated with a char-marker that caused a metal surface to overheat and shed small flakes on to the product. FSIS has not received any consumer complaints or reports of injury at this time.
Source: FSIS