Switzerland says it will open and grant access to previously closed intelligence files concerning Nazi war criminal Josef Mengele, widely known as the “Angel of Death” for his role at Auschwitz. Multiple reports say Swiss authorities have for years rejected repeated requests from historians seeking information about Mengele’s movements and activities after World War II, including claims that he may have spent time in Switzerland while evading justice. The BBC and other outlets report that Switzerland’s Federal Intelligence Service will allow researchers to view the files, following the long-running dispute over access. The articles note that Mengele fled Europe after the war, and that rumours persisted for years about where he went, with Switzerland at the centre of some accounts. While the reports focus on the decision to open the records, they also highlight the broader historical context: Mengele is associated with experiments and selections at Auschwitz, and the release of intelligence documentation is expected to shed further light on his post-war whereabouts. The exact scope of the materials to be released is not detailed in the provided summaries.