The case report of an injury to the Meckel’s diverticulum after penetrating injury to the abdomen (stab right flank) is presented. While there was no initial proof of intra-abdominal injury, the patient was admitted for observation, and developed peritoneal signs within 6 hours. We report right flank stab wound which resulted in a simultaneous injury of Meckel’s diverticulum and small bowel without any obvious manifestations of internal organ injury. After laparotomy with ileal segmental resection and primary anastomosis, an uneventful recovery followed.