text: The FBI have released an image of a man they are trying to trace in connection with a sex abuse probe . Police have released images of an unidentified man they are trying to trace to help them rescue a young girl who is believed to be being abused. The FBI confirmed it found images of a 'pre-pubescent blonde girl' that appear to show her being sexually abused, which could have been taken 'in America or elsewhere.' Officials said one picture, which does not show any abuse taking place, features the unidentified man posing with her. They said they are trying to trace the man - referred to as John Doe 29 - because they believe he may have 'critical information' to help them identify the victim and her whereabouts to rescue her. Investigators stressed the dark-haired man, believed to be between the ages of 30 and 45, is not suspected of carrying out abuse. Amanda Strickland, special investigator at the FBI, said: 'We are trying to stop further continued abuse of this child. We believe that it is still ongoing.' Police said the child was seen in one of the photographs wearing blue and white Nike velcro sneakers. They confirmed John Doe 29 has a tan complexion and was pictured wearing a silver ring on his left hand ring fingers. Other pictures appear to show a different hand with a ring on the right hand. Initial images of the unidentified adult male, John Doe 29, shown with a child were first recorded by the National Center for Missing and Exploited Children in January of 2008. The pictures have been recently re-enhanced to try and identify the mystery man. The FBI released the appeal, with images of John Doe 29, and distinguishing features in a bid to get information . He is being sought as part of the FBI’s Operation Rescue Me and Endangered Child Alert Program (ECAP) initiatives which aim to find abuse victims. The FBI has released a poster and blog appealing for any information about the man. People are asked to submit a tip online at tips.fbi.gov or call the FBI’s toll-free tip line at 1-800-CALL-FBI. Investigators said a collection of photos were found showing the girl being abused, but in one which did not feature abuse John Doe is seen posing with the girl, and there is a close up of his hand (left). The FBI have placed the image of the unidentified man on the Endangered Child Alert pages of its website (right) Investigators also released images of the girl's white Nike shoe (left) and the location of the photo (right)
target: 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 .