He was a German citizen. Also during the war he was engineer at the Dutch Staatsmijnen (State mines) and became a member of the german nazi party NSDAP. However, he supported Pierre Schunck, who was suspected of illegal possession of arms and other things, by visiting him during the search in party uniform.
He was expelled from Holland in 1945. His residence was unknown in 1945, Veritas 18-01-1945, his marriage was dissolved on 12-09-1945, see registry office of Heerlen 1930 nr. 193. Source: “De kalknijverheid in Voerendaal 1916-1969: kalksteengroeve en kalkoven Schunck aan de Bergseweg” in “Het Land van Herle” 65/3, see link.