What happened
Five-year-old Lucio Dupuy died after sustained abuse in a case that generated widespread outrage across Argentina.
The investigation
Medical evidence and the child’s history of injuries became central to the prosecution of his mother and her partner.
What the courts or investigators concluded
Both women were convicted, with the court assigning criminal responsibility for the fatal abuse and related offenses.
Why the case remains significant
The case helped drive a national child-protection training law known as Ley Lucio, aimed at improving detection and reporting of violence against children.
Case context
Crime by Region organizes cases geographically so readers can move from one file to other investigations from the same country. For unresolved or contested cases, the wording above reflects the distinction between confirmed events, investigative theories and findings actually established in court.