Swiss Archives on Nazi Butcher Josef Mengele Finally Declassified
Switzerland's Federal Intelligence Service has officially declassified its files on Nazi war criminal Josef Mengele. After decades of secrecy, historians will now have access to documents potentially revealing how the "Angel of Death" escaped through Swiss territory.
In a historic reversal after decades of secrecy, the Swiss Federal Intelligence Service (FIS) announced Monday that it is granting access to its classified files on the infamous Nazi war criminal Josef Mengele. The decision follows years of "outrageous refusal" and comes just months after the agency’s most recent rejection in February 2026.
A "New Situation" in Bern
The Swiss intelligence community had long shielded the Mengele dossier, citing the protection of sources and sensitive operational data. However, following a legal appeal to the Federal Administrative Court, the FIS conducted a "re-evaluation" and declared that "new circumstances" now justify lifting the veil.
The documents have been held under strict lock and key in the Swiss Federal Archives since 2001, following a government decision to extend their classification.
The files were originally examined by the Bergier Commission, a body established in 1996 to investigate Switzerland’s conduct during WWII and its banks' handling of Holocaust victims' assets.
Historians and Swiss parliamentarians are eager to examine how the "Angel of Death" managed to enter Switzerland as a tourist during his escape to South America without being apprehended.
The Legacy of the "Angel of Death"
Josef Mengele, the SS physician at Auschwitz, earned his gruesome nickname for the inhumane medical experiments he performed on prisoners, specifically targeting twins and children.
After the fall of the Third Reich, Mengele successfully evaded capture and fled to South America, living in Argentina, Paraguay, and Brazil. For years, activists have demanded to know if Swiss authorities turned a blind eye to his presence or provided logistical support during his flight.
New Access Rules
While the files are being declassified, the FIS noted that access will be granted under specific conditions and procedures that are still being finalized.
"These new regulations will serve as the blueprint for all future requests to view sensitive historical intelligence," an official stated.
This move is seen as a major victory for transparency and Holocaust memory, as scholars look to piece together the final missing chapters of the hunt for one of history's most prolific monsters.