all counts and was given a life sentence. He died of a heart attack in 1991 in the prison of Rheinbach. See also List of serial killers by number of victims Books Stephan Harbort, "Ich musste sie kaputtmachen". Anatomie eines Jahrhundertmörders; Düsseldorf (Droste) 2004 () References External links The Jockel Project by DDV Serial Killer Spotlight 1933 births 1991 deaths 20th-century German criminals Fugitives Fugitives wanted by Germany German cannibals German murderers of children German people convicted of child sexual abuse German people convicted of murder German people who died in prison custody German prisoners sentenced to life imprisonment German rapists German serial killers Male serial killers Necrophiles People convicted of murder by Germany People from the Province of Upper Silesia People from Zabrze Prisoners sentenced to life imprisonment by Germany Prisoners who died in German detention Serial killers who died in prison custody