In early September 1942, after the head of the Judenrat, Herschel Zimmerman, had been shot to death by the Germans, the inmates of the ghetto were collected by the Ukrainian auxiliary police at the town's market square. They were ordered to leave all their valuables at the site and then were taken in eight trucks and some carts to the mass grave that had been dug near the former village of Czujew, south of the town. Upon their arrival at the murder site, the victims were made to strip naked, forced into the pit with their faces down, and then the Gendarmerie men shot them to death with machine-guns in the back of the head. The Jews' valuables and clothing were taken away; some were taken by the Gendarmerie and Ukrainian auxiliary police, and the rest went to the German civil administration. The Gebietskommissar of Horochów Ernst Härter was reportedly in charge of this murder operation.

More information: Yad Vashem

On a date believed to be August 12, 1941, trucks with Ukrainian auxiliary policemen arrived in Horochów, together with Gestapo officers from Łuck and a unit of Einsatzkommado 4a. According to a list, Ukrainian police rounded up 300 (or, according to the ChGK document, 400) prominent Jewish men, several of whom had been previously released from police custody, while several other Jews were taken from the neighboring town of Druszkopol. All these men were taken to the town park. They were made to dig a large pit in the area of the park and then, in groups of 10-20, they were forced into the pit and shot to death in the back of the head with pistols by Germans. The shooting lasted for several hours.

More information: Yad Vashem