Actress Hayden Panettiere Died of Cardiac Arrest at 36; Cause of Death Pending

Actress Hayden Panettiere, known for her roles in "Heroes" and "Nashville," has died at the age of 36. She was found in cardiac arrest at a residence in Greenville, South Carolina, on Sunday afternoon.

Emergency services were dispatched following a 911 call reporting the cardiac arrest. Despite advanced life support measures and CPR, medical personnel were unable to revive Panettiere. She was pronounced dead approximately 30 minutes after the initial call.

An autopsy conducted on Monday revealed no signs of trauma that could have contributed to her death. The official cause of death remains undetermined as authorities await further information.

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A person had collapsed.

Panettiere, who resided in California, was temporarily staying at the South Carolina home. Local police confirmed the address was in an apartment complex. A neighbor reported hearing a commotion and a person collapsing early Sunday morning.

The actress had previously spoken publicly about her struggles with addiction and mental health, as well as the grief from losing her brother. Her father, Skip Panettiere, released a statement expressing profound sadness and remembering her as a "light" and a "force of nature."

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With profound sadness, we announce the tragic death of our beloved Hayden. She was an incredible light and a force of nature who brought immeasurable love and joy to everyone she knew – as well as to millions who watched her on screen.