Overview
- First responders found Panettiere unresponsive and in cardiac arrest at a Greenville apartment on Aug. 16, and she was pronounced dead after extended resuscitation efforts failed.
- The Greenville County Coroner ruled on Sept. 22 that the cause of death was the toxic effects of fentanyl, 4‑ANPP, alprazolam, methocarbamol and quetiapine and listed the manner as accidental.
- 4‑ANPP is a chemical tied to illicit fentanyl manufacture and its presence with fentanyl in toxicology commonly indicates exposure to illicit or counterfeit fentanyl products.
- Local police and the Drug Enforcement Administration continue a criminal probe focused on whether a counterfeit or black‑market pill from a Los Angeles source played a role and agents have questioned people and executed searches.
- Friends and family held a private memorial in Malibu in mid‑September and Panettiere’s public accounts of postpartum depression and past substance‑use struggles have framed public reaction and the family’s request for privacy as the investigation proceeds.