Woman Who Testified Against Her Mafia Father Dies, Cause Under Investigation

Sat Sep 12 2026 02:22:01 GMT+0000 (Coordinated Universal Time)

Denise Cosco, who spoke out against her killer father, died in Rome after a tragic fall. Police suspect possible suicide and are probing the case.

Denise Cosco, the daughter of a mafia killer who turned justice system in 2009, died in early September in Rome after a severe fall. Her death, coming at the same age as her mother Lea Garofalo, who was brutally murdered in 2009, has sparked an inquiry into whether suicide was a factor. Cosco’s testimony at her father’s trial marked a courageous break from the organized crime network, but she reportedly struggled with mental health and addiction after years of state protection. The investigation now includes a review of her phone and seeks to determine if any incitement to self-harm occurred. Her passing underlines the lasting scars inflicted by the ‘Ndrangheta and the need for enduring support for witnesses who leave the mafia.

Denise Cosco, a 35‑year‑old who had stood up against her own father’s mafia killing of her mother in 2009, died after a critical fall on Sunday at a Rome hospital. The tragedy, which saw her death at the same age as her mother Lea Garofalo, has prompted a police investigation into whether she took her own life.

Cosco’s mother, who was murdered by the ‘Ndrangheta bank‑rolling her family, became a symbol of resistance after turning state‑witness in 2010. Cosco, who lived in state‑protection for many years under a new identity, testified at her father’s trial in 2013, describing herself as a “proud witness for justice.”

Friends describe her as having battled mental health problems and addiction following her testimony, starting a life Altr? in the aftermath of repeated trauma. Despite being protected, she reconnected with her imprisoned father in prison in recent years, reporting a deep sense of loss.

Police have seized her phone for analysis and opened an investigation into possible incitement of suicide. The nature of the Mafia’s family ties, which the veteran lawyer Enza Rando described as “true monsters in the lives and souls” of those surviving the violence, has left many affected families in a fragile and permanent state of grief.

Support groups highlighted the need for long‑term backing for former witnesses, saying pressure and vulnerability often persist beyond the initial year of protection.

The anti‑mafia organisation Libera has cited Cosco’s death as a stark reminder of the continual struggle faced by those who break out of organized crime.