Germany's 'Nazi bride' Beate Zschäpe has told judges she wants to testify about the brutal death of a nine-year-old girl thought to have been murdered by one of her lovers.

Two of the greatest crime dramas in German history converged in spectacular fashion recently when the DNA of neo-Nazi mass murderer Uwe Bönhardt was found on the corpse of the country's most famous missing girl.

Forensic tests on genetic material at the grave of nine-year-old Peggy Knobloch - often referred to as the Maddie McCann of Germany - has been confirmed as coming from gangster Bönhardt.

Peggy Knobloch (pictured, left) went missing in May 2001 and her body was finally found in northern Bavaria in July this year. DNA tests have linked Uwe Bönhardt (right) to her body

Zschäpe (pictured, left), said through her lawyer Mathias Grasel (right) she wanted to testify about what happened to Peggy

Bönhardt and his sidekick Uwe Mundlos committed suicide in 2011 when they botched a bank raid aimed at financing their National Socialist Underground cell, which was dedicated to driving immigrants out of Germany.

Zschäpe, 41, the sole surviving member of the NSU gang, is on trial for her role in the murders of ten immigrant businessmen and a policewoman, which took place over a decade.

Both of the dead men were lovers of Zschäpe - referred to in German media as 'The Nazi Bride' - and pornography and Nazi propaganda was found on their computers after her arrest.

Neo-Nazi cell: (Left tor right - Zschäpe, Uwe Boehnhardt and Uwe Mundlos) are shown in pictures published in 1998, when they had already become fugitives

Now those computers are being re-examined to try to find out if there are any more clues that might corroborate the DNA evidence linking Bönhardt to the death of Peggy.

Numerous children's toys, including a teddy bear, were found in the wreckage of their caravan hideout, which Zschäpe torched after her cohorts killed themselves.

In the ruins of their hideout police also found a board game they invented called Pogromoly - an amalgam of pogrom and Monopoly - in which the winner was the player who herded the biggest number of Jews into gas chambers.

Peggy went missing in 2001 in Bavaria. Her remains were found in July this year in a forest 95 miles from the city of Eisenach, where Bönhardt and Mundlos killed themselves in November 2011.

Police and prosecutors said genetic material - thought to be on a fragment of cloth smaller than a human thumbnail - recovered from the site had been connected to Bönhardt.

The disappearance of Peggy came to haunt Germans in much the same way that the vanishing of Maddie McCann while on a holiday with her parents in Portugal scarred the collective psyche of people in Britain.

Peggy was last seen 50 yards from the front door of her home in Lichtenberg, Bavaria, when she vanished on May 7, 2001.

Hundreds of police officers and troops, backed up by Tornado surveillance aircraft equipped with thermal imaging cameras, scoured the countryside around her home for weeks.

Police remove Peggy's remains from her lonely grave in the forests of northern Bavaria. Zschäpe now says she is ready to testify about what happened to Peggy

But her fate only became clear in July when a mushroom picker stumbled on her remains in woodland ten miles from her home. Wild animals had disturbed her lonely grave.

A mentally backward man named Ulvi Kulac was found guilty of Peggy's murder and sentenced to life imprisonment in the city of Hof in 2004.

His conviction was declared unsound nine years later and he was freed in 2014.

The discovery of 34-year-old Bönhardt's DNA on the remains of Peggy created a media firestorm.

The tabloid Bild pointed out Peggy's hometown lay directly between Zwickau - the home base of the NSU - and Nuremberg, where the first murders were carried out by the group in September 2000.

The trio believed if they killed enough immigrants, thousands of others in Germany would fear for their lives and head back to their countries of origin.

Bönhardt was known to mix in the company of child perverts: one of them, Tino Brandt, was sentenced to five-and-a-half years for 66 sex crimes involving children.

Zschäpe, whose trial has been dragging on since 2013 and still has no end in sight, said through her lawyer Mathias Grasel she wants to answer questions about Peggy.

Her evidence is due to be heard in the week beginning December 5.