A 25-year-old mother in Pirassununga, São Paulo, Brazil, is under investigation after allegedly attempting to poison her 3-year-old daughter using chumbinho, a common rat poison. The incident occurred on Thursday, October 19, and the mother was taken to the hospital after also ingesting the poison. She received a custody hearing and remains in preventive detention while authorities analyze her mobile phone for evidence. Both mother and child were admitted to the Intensive Care Unit (ICU) of the local hospital, Santa Casa. While the mother has been released from the hospital, the health condition of the daughter remains unknown. The case has been officially classified as an attempted homicide, highlighting the alarming nature of the incident and drawing attention to child safety in the area. As investigations continue, authorities are focusing on collecting evidence from the mother's phone and conducting interviews with relevant witnesses. The police have not disclosed the woman’s identity, and efforts to contact her defense have been unsuccessful. The case has raised serious concerns regarding the welfare of children in domestic settings and the potential risks associated with substance misuse by caretakers.