The largest murder operation against the local Jews took place on December 2-3, 1941. The victims were assembled, apparently in the prison area, and driven to the shooting sites in trucks and buses. According to the ChGK reports, when the trenches near the fishing industry head office, the first shooting location, became filled with dead bodies, the shooters moved to the clay pits near the brick-and-tile factory, and the shooting went on.
Soviet sources refer to the extermination of 420 Jewish families, including women and children, while German documents speak of 300 victims shot on that day.

More information: Yad Vashem