Tragedy: This is the official cause of death of actress Hayden Panettiere

The Greenville County Coroner's Office has released the official cause of death of American actress Hayden Panettiere, who passed away at age 36. The cause of death was determined to be toxic effects of fentanyl, 4-ANPP, alprazolam, methocarbamol, and quetiapine. The manner of death was ruled an accident. Medical teams called to the scene found her in cardiac arrest, and her death was declared at the scene.

The Greenville County Coroner's Office released today (Tuesday) the official cause of death of American actress Hayden Panettiere, who passed away at age 36. The cause of death was determined to be toxic effects of fentanyl, 4-ANPP, alprazolam, methocarbamol, and quetiapine. The manner of death was ruled an accident. Medical teams summoned to the scene following a 911 emergency call found Panettiere in cardiac arrest. The teams attempted advanced resuscitation efforts, but her death was declared at the scene. Police previously stated that the circumstances did not appear suspicious and that there were no signs of criminal activity. According to a source cited in reports, Panettiere had complained of back pain over the past year. Panettiere, star of the series "Heroes" and "Nashville," began her career in the entertainment industry as a toddler. Alongside her success, her life was marked by complex personal struggles exposed to the public, including depression, addictions, and toxic relationships.