Gudrun Burwitz, the daughter of high-ranking National Socialist and SS Chief Heinrich Himmler, has died aged 88.
She was an unrepentant National Socialist and a Holocaust revisionist.
According to German newspaper Bild, Munich-based Burwitz worked for the country's Federal Intelligence Service in the 1960s.
It reported that Burwitz, who was active in nationalist circles into her old age, was employed from the end of 1961 until 1963 as a secretary at the BND in Pullach, Munich, under a different name.
Burwitz participated in Nationalist marches and never distanced herself from her father or National Socialism.
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Himmler and his daughter during World War II
She was the figurehead of the NS organisation “Silent Assistance,” which helped accused "Nazi war criminals" find refuge, avoid extradition, get a lawyer or pay for an old age home.
The organisation was established in 1951 and was said to have tried to help Klaas Carel Faber, 89, avoid extradition from Holland to stand trial for alleged war crimes in Germany, in 2011.
The group also assisted former Danish SS officer Soren Kamm, a German citizen, who was wanted in his country of birth.
In an interview with the Daily Mail she said: "I never talk about my work… I just do what I can when I can."