The largest mass shooting perpetrated by the Einsatzgruppen took place on 29 and 30 September 1941 at Babi Yar, a ravine northwest of Kiev, a city in Ukraine that had fallen to the Germans on 19 September.[82][83] The perpetrators included a company of Waffen-SS attached to Einsatzgruppe C under Rasch, members of Sonderkommando 4a under SS-Obergruppenführer Friedrich Jeckeln, and some Ukrainian auxiliary police.[84] The Jews of Kiev were told to report to a certain street corner on 29 September; anyone who disobeyed would be shot.