Investigators are hoping to track down and rescue the child who is believed to be between four and five years old.
The footage of her abuse was first spotted by authorities on known paedophile sites in July.
But detectives with Germany’s Federal Criminal Police Office (BKA) believe the abuse may have started as early as last October, when images first began appearing on the notorious dark web.
They fear the girl is still being abused and have launched a last-ditch bid to find and save her.
Anyone with information that could lead to her being found are invited to contact BKA investigators via their website.
“The Central Office for Combating Internet Crime and the Federal Criminal Police Office are jointly searching for an unknown suspect and his underage victim”, a statement said.
“The unknown accused is suspected of sexually abusing a child of about 4 to 5 years of age and then spreading it on a child pornography platform in the so-called Darknet.”
Police are searching for an unknown suspect and his underage victim. Picture: EPA/German Federal Criminal Police.Source:AAP
An unknown person is suspected of sexually abusing a child of about four to five years of age and then spreading it on a child pornography platform in the so-called darknet. EPA/German Federal Criminal Police.Source:AAP
The German-speaking girl is described as having blonde to dark blonde hair, a round chin and a snub nose. Her eye colour is believed to be brown.
Efforts to identify the girl and her attacker have so far failed, and authorities worry that she is could still accessible to her attacker.
“Since there are no further investigative possibilities, the District Court of Giessen ordered a public inquiry with pictures of the victim”, police said.