Paramedics began advanced lifesaving measures, but Panettiere could not be revived and was pronounced dead at the scene. Authorities said an autopsy found no trauma that would explain her death.
Reports surrounding the 911 call have led to speculation about what happened, but officials have not yet announced a final cause or manner of death. Police and the coroner’s office are continuing their investigation, and no evidence of foul play has been reported.
Until toxicology and other medical tests are completed, claims about a specific substance or medical condition should be treated as unconfirmed. Panettiere’s death has prompted tributes from family, former co-stars, and fans remembering her career and life.