Frédéric Péchier was found guilty of intentionally contaminating infusion bags with harmful chemicals, leading to multiple serious adverse events and fatalities at the Saint-Vincent clinic in Besançon. His pattern of victims ranged from children to elderly patients, with incidents ceasing when he was barred from practice. The prosecution argued Péchier sought to harm colleagues' reputations by creating medical emergencies he could then manage. Despite some denial during the trial, evidence and his changing testimony led to his conviction and a life sentence with a minimum 22-year term.