MADELEINE McCann suspect Christian B was found with a secret stash of hundreds of sickening child abuse images.
The convicted paedo used a digital camera to store 391 indecent images and 68 videos showing youngsters being abused, it is claimed.
He also used the Casio Exilim to take photos of himself sexually abusing a friend’s five-year-old daughter, the Mail on Sunday reports.
The vile stash formed the main part of evidence against the fiend at his trial for attacking the young girl.
It was discovered when police raided his home in Braunschweig for a separate allegation of domestic abuse.
Cops then found the girl, who had moved to another part of Germany with her mum but Christian B had already fled to Portugal.
An arrest warrant was issued and he eventually confessed to the sickening crimes when he was extradited back to Germany in 2016 and jailed for 15 months.
The judgment from Braunschweig District Court revealed the photos and videos showed children under the age of 14 being abused by adults.
It also told how he abused the five-year-old girl in a park in 2013 – around the time cops began mounting a case against him in relation to Madeleine’s 2007 disappearance.
A tip-off was made to the German equivalent of Crimewatch after e-fits were circulated of potential suspects in Praia da Luz where the toddler vanished.
Christian B was living in his campervan in the town at the time and used his phone outside a nearby club just 30 minutes before Madeleine disappeared.
It is claimed Christian B could have dropped the body of the tot in an abandoned shaft – with Portuguese police last month searching wells on the island.
German prosecutor Hans Christian Wolter has publicly said he believes Christian abducted and killed Madeleine, but does have enough evidence to charge him.
Christian B has a list of previous convictions including rape, child sex offences, theft and dishonesty.
He is in Germany’s Kiel prison for drugs offences and is due to start a seven-year sentence for the rape of an elderly American woman in Praia da Luz in 2005.