December 17, 1955 - Ondrej Rigo
Operating across three countries over a two-year period, Rigo conducted a sustained campaign of violence against women before Slovak authorities brought him to account. The cross-border nature of his crimes — spanning Bratislava, Munich, and Amsterdam — complicated early investigative efforts and allowed the killings to continue. He died in Leopoldov Prison while serving a life sentence for nine murders and one attempted murder.
From Wikipedia
Ondrej Rigo (17 December 1955 – 14 June 2022) was a Slovak serial killer and necrophile who targeted women in Bratislava, Munich and Amsterdam from 1990 to 1992. He served a life sentence until his death for nine murders and one attempted murder in Leopoldov Prison in Slovakia. Rigo was diagnosed with a schizoid personality disorder and an antisocial personality disorder as well as necrophilia, finding pleasure in having intercourse with women with mutilated heads. Rigo remains the Slovak murderer with the highest number of victims and he is also the most prolific serial killer in modern Slovak history.
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