Investigators found photos of a young girl being sexually abused . The images were taken from the victim's Facebook account and showed her in various states of undress with what appeared to be an erect penis on top of her.
Investigators found photos of a young girl being sexually abused . FBI are trying to trace a man , who is not accused of carrying out abuse . He appears in image posing with the girl , but not abusing her . They want to find him to identify the girl and her abusers .