Interpol identifies Frankfurt river victim, father arrested in cold case murder

A 16-year-old found in the Main River in Frankfurt on 31 July 2001 has finally been identified as Diana S., and police say the arrest of her father has turned the long-cold case into a murder investigation with a suspect in pre-trial detention.

German authorities said Diana S. had been violently assaulted, with signs of prolonged abuse and sexual assault present on her body when it was recovered. For 25 years, the girl discovered that afternoon remained unknown to investigators, even as her death stayed one of the most haunting unidentified-victim cases tied to Frankfurt am Main.

The breakthrough came after Diana S.’s case was added to Interpol’s Identify Me campaign in October 2024. The initiative began in May 2023 with 22 unidentified women’s cases and later expanded to 47. By October 2024, it had already drawn roughly 1,800 public tips, and Diana S. became the campaign’s sixth successful identification. German police said several of those tips pushed investigators toward new leads in her case.

That trail led to her father, a 67-year-old German citizen who police say was born in Pakistan. The Hessian State Criminal Police Office carried out the arrest on 12 May 2026 at the request of the Public Prosecutor’s Office in Frankfurt am Main. He is now being held on suspicion of murder.

Investigators say they believe he killed his daughter between 28 and 31 July 2001 in the family apartment in Offenbach, using massive violence. Authorities allege he then wrapped her body in a bed sheet, tied it up, attached it to a parasol stand and threw it into the Main River in Frankfurt, where it was later found. The police inquiry remains active, with investigators still working to pin down the exact circumstances of Diana S.’s death and what her life in Offenbach looked like before the killing.

For a case that spent a quarter-century without a name, the turn was stark: a teenage victim finally identified, and in the same breath, her father accused of the murder. The name Diana S. is now back in the record, but the full story of those final days in Offenbach is still being assembled piece by piece.