Presiding Judge Matthias Schertz said the defendant killed a 43-year-old mechanic in September 2020 to live out his cannibalism fantasies.
Several women had accused actor Armie Hammer on social media of sending them explicit messages about rape and cannibalism. His former girlfriend had also alleged rape.
The 41-year-old teacher is accused of having met his victim, a 43-year-old German mechanic, on an online dating site a few hours before the killing, according to a media report.
US researchers found that cannibalism is a new way to stop the spread of disease and it may be an understudied factor in disease control.