Hayden Panettiere death: 911 audio mentions ‘overdose’ after Heroes star found dead in South Carolina

New details have emerged surrounding the sudden death of Heroes and Nashville star Hayden Panettiere, with emergency dispatch audio referring to a possible “overdose” as authorities continue to investigate what happened. The 36-year-old actress was found unresponsive at a residence in Greenville, South Carolina, on Sunday after an acquaintance called emergency services about 1.50pm. Dispatch audio obtained by TMZ appears to capture a first responder saying, “Responding. Overdose. CPR is in progress.” Other reports say emergency crews were initially responding to calls concerning an “unresponsive female” in cardiac arrest, with paramedics administering advanced life support in a desperate attempt to revive the actress. Despite resuscitation efforts, Panettiere was pronounced dead at the scene at 2.32pm. An autopsy has since found no signs of trauma contributing to her death, but officials have not yet determined an official cause or manner of death and further investigation is continuing.