Switzerland's Federal Intelligence Service will open previously sealed files on Josef Mengele, the infamous Auschwitz doctor known as the 'Angel of Death.' This decision follows a legal appeal by historian Gérard Wettstein, aiming to uncover Mengele's movements in Switzerland during the 1960s. Mengele evaded justice after World War II, dying in Brazil in 1979.

• 01Josef Mengele was known for conducting horrific medical experiments on inmates, particularly twins and children, at Auschwitz concentration camp.
• 02The files had been restricted since a 2001 Swiss government decision, citing privacy and intelligence concerns.
• 03Historian Gérard Wettstein's legal appeal prompted the Swiss Federal Intelligence Service to reassess access to the documents.
• 04Mengele escaped Europe in 1949 and lived in South America until his death in Brazil in 1979.
• 05The International Auschwitz Committee supports the release of the documents, believing they may clarify Mengele's post-war activities.

The release of these files could lead to a better understanding of historical events related to Nazi war criminals, potentially affecting how such cases are studied and remembered.