In July 1941, Łomża Jews were ordered by the Germans to form a Judenrat. A Jewish Ghetto Police was established with Solomon Herbert named as its chief. All Jewish inhabitants were ordered to move into the new Ghetto in one day, on 12 August 1941. German and Polish auxiliary police inspected Jews entering the ghetto and forcibly confiscated valuables. On 16 August the inmates were assembled at the Green Market to be tallied. The Chairman of Judenrat was handed a list of about two hundred people accused of collaboration with the Soviets from before Operation Barbarossa. They were taken to the Giełczyn forest and killed by a Nazi Einsatzgruppe under SS-Obersturmführer Hermann Schaper. For the rest, work cards were distributed among those with a place of employment. In the following days, more Jews were being brought in from surrounding villages such as Piątnica, Jedwabne and Stawiski. The Judenrat requested permission to expand the Ghetto. The Germans agreed on the condition that Jews pay half a million Marks. On 17 September however, before the expansion, the inmates were again ordered to assemble at the Square. The Germans separated those who did not have a work card. Over two thousand men and women were trucked to the Giełczyn and Sławiec forests and exterminated. On that date, the Ghetto was surrounded by barbed-wire with only one exit, requiring a special permit from the Gestapo. The main gate was built with the inscription: "DANGER, DISEASE". Jews who worked outside the Ghetto used that gate twice daily.