Overview

• A technical report from São Paulo’s criminalistics institute identified terbufos, known locally as chumbinho, in a glass bottle seized from the suspect’s residence in Guarulhos.
• Police say all four victims showed internal signs consistent with poisoning, and three bodies were exhumed for complementary analyses to establish any biochemical match.
• According to investigators, the suspect confessed to two killings, while her defense argues there is no robust and definitive evidence and invokes the presumption of innocence.
• Prosecutors intend to charge the suspect’s twin sister as a coauthor in the four deaths and to indict Michelle Paiva da Silva for participation in her father’s homicide, with all three women in custody.
• Police now allege the suspect engineered a plot to frame an ex-boyfriend who is a military police officer in one victim’s case by using a false identity, staged notes, and a cake that investigators believe was poisoned, though she later denied using poison.