- I was investigating corruption at the Deutsche Arbeitsfront: the sale of labour permits.

Only workers at the forced labour camps or those employed at German factories as well as those possessing a labour permit would be exempt from the deportation.

On the night of 4 August 1942, gendarmes, German police, Jewish Ghetto Police, and Polish police cordoned off the ghetto area, took men out of their homes and gathered them in the market square, where the men's labour permits were examined.