During the pogrom carried out in Uman on September 21, 1941 some Jewish men had been imprisoned. Apparently, on September 22 (or September 23), 1941 all of them were taken to the Jewish Cemetery in order to prepare a pit and then shot. On the same day about 1,500 Jews of Uman were brought to the same place and murdered by members of Einsatzkommando 5 of Einsatzgruppe C.
From "The Story of the Partisan Raisa Dudnik, who escaped from Uman. Recorded by Miriam Zheleznova [1944]":
…The Germans organized their first pogrom in Uman on September 23. On that day, I left at dawn for a neighboring village. When I got back, I found no one at home. The apartment had been turned upside down. I rushed to the town jail. From the other side of the fence I heard cries of "Shma Yisroel," the sobbing of women, the crying of children. All at once the prison gates opened wide. The Germans brought some Jewish men out into the street. Each had a shovel in his hands. I saw my father and ran toward him.
"Goodbye, Raya!" my father said. "Mother and Khaya are in the jail. They're taking us to be shot."
The Germans threw me aside and herded the men into the cemetery…
Rubenstein, Joshua and Altman, Ilya. The unknown black book : the Holocaust in the German-occupied Soviet territories . Bloomington, Ind. : Indiana University Press, 2010, p. 195.