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Despite having split from Leslie, Gregor was not initially suspected. Investigation efforts revealed that he and Leslie's daughter had a good relationship and that Gregor appeared to have no motive for violence. However, forensic genetic genealogy provided a definitive link: a DNA sample collected secretly from the crime scene matched Gregor's genetic profile.
When confronted with the evidence, Gregor pleaded guilty to second-degree murder and was sentenced to 22 years in prison. His admission brought solace to Leslie's family, who had endured years of uncertainty and heartache.