Hamburg authorities arrest teen for driving US girl to suicide
German Teenager Arrested in Hamburg Over US Cyberstalking and Suicide Case
The Tech TL;DR:
- An 18-year-old in Hamburg, Germany, was arrested under suspicion of murder and dangerous bodily harm in indirect perpetration following the death of a 14-year-old girl in Indiana, US.
- Investigators state the suspect used the communication platform Discord to direct the victim to inflict severe knife wounds and carve an internet pseudonym and group name into walls using her blood.
- The case came to light after the National Center for Missing and Exploited Children forwarded an FBI tip to law enforcement authorities in Hamburg.
An 18-year-old man from Hamburg has been arrested under suspicion of driving a 14-year-old girl in the United States to self-harm and suicide via social media, according to a joint statement by the Hamburg public prosecutor’s office and police reported by Bluewin on October 23, 2026.
German National Allegedly Coerced Indiana Teenager to Self-Harm
During September and October, while the suspect was still 17 years old, he allegedly targeted the psychologically vulnerable 14-year-old living in the US state of Indiana. According to investigators cited by Bluewin, the German national used the messaging platform Discord to order the teenager to cut herself. The victim was instructed to use her own blood to write the internet pseudonym “Kaz” and the acronym “NMK” onto room walls. A few days after these incidents, the 14-year-old was found hanged in her bedroom on October 2.
Investigators are examining whether the teenager recorded her own fatal strangulation.

Extortion Attempt and the Nefarious Maniac Kult Connection
Following the victim’s death, the suspect attempted to acquire video files documenting the suicide.
Prosecutors state that the suspect sought the visual media to gain entry into a digital group designated as “NMK,” which stands for “Nefarious Maniac Kult,” or to elevate his status within the network. The investigation into the 18-year-old began after the FBI transmitted a report originating from the National Center for Missing and Exploited Children to German authorities.