A schoolteacher is suspected of murdering a man before consuming his remains.
The German, identified as Stefan R, was arrested on Thursday.
After human leg bones with the flesh removed were found in a Berlin park, two different sniffer dogs led detectives from different parts of the city to his apartment.
His alleged victim, 44-year-old Stefan Trogisch, was reported missing by his housemates in early September.
He left his home shortly after midnight and never returned.
Police allege their investigation revealed that Stefan R, 41, had searched for cannibalism-related content on the Internet.
Police allege he also sought to see if someone could survive after their penis was cut off, said statue.
At Stefan R’s apartment, police found a bone saw with human blood on it and a supply of chemicals, they claim.
The suspect would claim that he used the chemicals to make soap.
Police have wondered if they were actually used to dismantle a body.
Traces of the alleged victim’s blood were also found in the apartment after forensic tests, according to the Berliner Morgenpost.
Researchers have reportedly found messages between the two men on a gay dating site.
“The suspect had an interest in cannibalism,” said prosecutor Martin Steltner.
“He searched online for the topic.”
A police spokesman added, “Due to the completely meatless bone and other evidence, we strongly suspect that Stefan T was the victim of a cannibal.”
Tests showed the bones were his, police said.
The missing person’s investigation has now turned into a murder investigation.
Stefan R is a secondary school math and chemistry teacher.
He was arrested at his home on Wednesday and brought to trial before being remanded in custody on charges of “basic motive sexual murder.”
Trogisch, an electrical engineer, was known to use dating apps to meet male and female partners.