Fritz Tobias (3 October 1912 – 1 January 2011) was a German writer, government official and member of the Social Democratic Party of Germany.
According to his findings the Nazis were not guilty and the historically-significant arson would have been the action of Marinus van der Lubbe alone.
He took part in the Second World War until 1945, and he claimed to have suffered several injuries, most recently in April 1945 in northern Italy.
According to the journalist and former editor of Spiegel Peter-Ferdinand Koch, the British Secret Intelligence Service had already recommended Tobias to the Lower Saxony Ministry of the Interior at the end of 1945, as he had interrogated high-ranking SS officers on behalf of the British military police and war crimes investigators.
After making an extensive study of The Brown Book of the Reichstag Fire and Hitler Terror, he argued that it was based on forged documents, like the Oberfohren Memorandum.
After she died in 2013, Tobias's son agreed, as was publicised in July 2013, to submit the archive to the German authorities.