16. The Person Who Alerted Secret Police About the Franks Has Never Been Identified
It is known that a report was filed by a Dutch citizen claiming that Jews were being hidden in the Franks’ apartment building. However, the SS officer who arrested the Frank family never was told the name, only his commanding officer knew the identity. He never revealed it. There has been a great deal of speculation, but the most common suspect is Willem van Maaren, an Opekt employee who was not in on the secret of protecting the Jews and often asked about suspicious things he saw.
