Italian investigators uncover evidence of premeditated ricin murders in Pietracatella

Scientific testing reveals toxin anomalies

Investigators in Campobasso have gathered concrete evidence pointing toward premeditated double murder in the deaths of Antonella Di Ielsi and her daughter Sara Di Vita. The 50-year-old mother and her 15-year-old daughter died in late December at Cardarelli Hospital after ingesting ricin at their home in Pietracatella. Sara died on 27 December in a state of severe delirium, while Antonella died on 28 December after losing the ability to speak clearly. While the case initially opened as an accidental food poisoning inquiry, toxicology testing conducted in March by Carlo Locatelli at the Maugeri Poison Control Centre in Pavia identified ricin in the victims' blood. Preliminary findings from the Robert Koch Institute in Berlin now indicate anomalies and traces of the lethal substance across 70 food items seized from the Di Vita residence.

Laboratory analysis and family testing

A specialised scientific team in Berlin, led by Christian Herzog, is preparing the definitive forensic evaluation for the Larino prosecutor's office. German biosafety researchers examined the seized foodstuffs alongside 131 environmental samples taken from the Pietracatella home during a forensic sweep in July. Their testing ruled out the presence of ricin antibodies in the blood of the surviving relatives, husband Gianni Di Vita and his 18-year-old daughter Alice, confirming neither developed an immune response to the substance. The completed laboratory report is due to be submitted to Italian authorities by the end of September as a 90-day procedural deadline concludes.

Defence pushes back on homicide theory

Gianni Di Vita's defence attorney, Vittorino Facciolla, maintained that accidental exposure remains a plausible explanation that investigators must not discard before final laboratory results arrive. Facciolla noted that medical specialist Carlo Locatelli previously observed that seven prior recorded poisoning cases in Italy involved accidental consumption.

I believe the hypothesis of an accident must be evaluated like all the other hypotheses in the field, without excluding it.

The defence stated that cross-referencing the analysis of household foodstuffs with the 131 samples collected in July will verify or eliminate the exact vehicle that carried the poison to the victims.

Extensive witness hearings and hospital review

The mobile police unit in Campobasso has conducted around 200 witness interviews to examine personal relationships and motives. On 16 September, detectives re-interviewed Giampiero Mastrogiorgio, a family friend and nurse who administered intravenous drips to the victims on 26 December before hospital admission. Questioning also focused on relatives and acquaintances, including Gianni's cousin Laura Di Vita, scheduled for her sixth hearing, his cousin Loredana, an agricultural teacher named Monia from Riccia, and Maria Antonietta, vice-principal at Alice's high school and Mastrogiorgio's wife. Forensic specialists from the Central Operations Service delivered digital copies of seized phones to legal teams, focusing on messages exchanged between the two families. Prosecutor Elvira Antonelli is currently overseeing three related investigative files: the aggravated double homicide inquiry, a manslaughter probe targeting five Cardarelli Hospital doctors who treated the women, and an aiding-and-abetting charge against a friend of Antonella Di Ielsi who withheld information regarding divorce discussions dating back to 2019.