The work by Sverigest Television reporter Elisabeth Asbrink also discloses that Swedish security police tracked the movements of IKEA founder Ingvar Kamprad in 1943 when he was 17-years-old, the Swedish news agency TT reported Wednesday.
Asbrink writes in her book, titled in English as "And in Wienervald," that security police established young Kamprad's role in recruiting members to the Nazi movement by steaming open his letters.
Her book reveals how Kamprad's links to the Swedish Nazi movement and far-right leader Per Engdahl continued long after the war ended and the horrors of Adolph Hitler's regime became known.
"It's a little odd that Ingvar Kamprad has not himself come out with this information," Asbrink said in an interview. "He has said that he wants to tell, and to say sorry."