End of the investigation into the death of Hayden Panettiere. What was determined?

Hayden Panettiere was found dead on August 16, with authorities ruling her death as an accidental overdose involving a toxic mix of fentanyl and other substances. Investigators are looking into whether she obtained illegal or counterfeit drugs. The actress, known for her roles in "Heroes" and "Nashville," had openly discussed her struggles with addiction and fame in her autobiography. She leaves behind a daughter, Kaya, with ex-partner Wladimir Klitschko.