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Woman who testified against father in mafia murder case found dead

Denise Cosco, an Italian woman who provided crucial testimony against her father and the 'Ndrangheta crime organization in connection with her mother's murder, has been found dead. The circumstances surrounding her death have raised concerns among investigators and anti-mafia authorities.

LSN World News · 12 September 2026

Woman who testified against father in mafia murder case found dead

Denise Cosco became a pivotal witness in a high-profile Italian criminal case when she testified against members of the powerful 'Ndrangheta clan, including her own father, regarding the murder of her mother. Her willingness to cooperate with authorities represented a rare break in the omertà—the code of silence traditionally enforced within mafia organizations.

The 'Ndrangheta, based in Calabria in southern Italy, is considered one of Europe's most dangerous criminal syndicates, with operations spanning drug trafficking, extortion, and violent crime. Cases involving family members turning state's evidence against the organization are exceptionally uncommon, making Cosco's testimony a significant development in Italian law enforcement efforts against organized crime.

The discovery of Cosco's death has prompted renewed scrutiny from investigators examining potential links to the criminal case in which she played a crucial role. Anti-mafia prosecutors have indicated they are treating the matter with the gravity it warrants, given the sensitive nature of her previous testimony and her family's connections to the organization.

The case underscores the persistent dangers faced by witnesses who cooperate with authorities against entrenched criminal organizations in Italy. Despite witness protection programs and legal safeguards, individuals who break silence against mafia operations continue to face significant risks.