Otto Frank
German retiree Ernst Römer accused Otto Frank of editing and fabricating parts of Anne's diary in 1980. Otto filed a lawsuit against him, and the court ruled that the diary was authentic. Römer ordered a second investigation, involving Hamburg's Federal Criminal Police Office (Germany) (Bundeskriminalamt (BKA)). It was determined that parts of the diary were written with ballpoint pen ink, which did not exist prior to 1951. Reporters were unable to reach out to Otto Frank for questions as he died around the time of the discovery.