The first known record of an order for the establishment of the ghetto, dated 10 December 1939, came from the new Nazi governor Friedrich Übelhör, who called for the cooperation of major policing bodies in the confinement and mass transfer of the local Jews. By 1 October 1940, the relocation of the ghetto inmates was to have been completed, and the city's downtown core declared "Judenrein" (cleansed of its Jewish presence). The German occupiers pressed for the ghetto size to be shrunk beyond all sense in order to have their factories registered outside of it. Łódź was a multicultural mosaic before the war began, with about 8.8% ethnic German residents on top of Austrian, Czech, French, Russian and Swiss business families adding to its vibrant economy.