Berlin student Rebecca Reusch disappeared on February 18, 2019. Her brother-in-law is said to have made bizarre searches on the Internet at the time of her disappearance.
Investigators re-examined the suspect's house in March 2023. A bathrobe with a missing belt was apparently used for "pulling and towing a bobby car" Because the belt was dirty, it was disposed of, according to a report from Bild.de. The suspect visited websites on which bondage practices during sexual intercourse and strangulation practices could be seen.