America.. Police close the investigation into the death of actress Hayden Panettiere

(CNN) - South Carolina State Police announced, on Wednesday, the closure of the investigation into the death of actress Hayden Panettiere, after it was found that she died as a result of an accidental drug overdose.

“Based on the findings of the coroner’s office and the results of the investigation, the death of Hayden Panettiere has been classified as an accident,” the Greenville Police Department said in an email to CNN. “The Greenville Police Department has thus concluded its investigation into this case.”

The Greenville County Coroner's Office concluded last September that Panettiere's death was accidental, but investigators were monitoring the possibility that the 36-year-old actress obtained illegal narcotic substances, possibly adulterated, from a dealer in Southern California.

Panettiere's death was announced inside an apartment in the city of Greenville on August 16, and the authorities explained in September that the death resulted from a toxic mixture of "fentanyl" (an opium derivative) and other narcotic substances.

The Drug Enforcement Administration was involved in the investigation into Panettiere's death, and CNN directed an inquiry to the agency about whether its investigation is still open. Sergeant Diana Muñoz, a Greenville police spokeswoman, told the network at the time that she could not comment on whether other parties were still investigating the circumstances of the death.

According to the coroner's report obtained by CNN, Panettiere was found with her heart stopped, and paramedics were unable to revive her. Her friend and his brother found her inside a rented apartment, where she was sitting with her legs crossed and her face down.

The coroner's report stated that Panettiere's body was purple in color. One of the two men who found her gave her two doses of Narcan, a drug used to reverse opioid overdoses, and then called 911 after her body showed no response.

One of the men stated that he was not aware that Panettiere had been using illegal drugs in recent days, noting that “she was very good at hiding it,” according to what was stated in the coroner’s report.

Panettiere has been frank about her struggles, as the actress has spoken openly about the difficulties she faced with early fame, and her battles with mental health disorders and addiction.

And this year; Panettiere addressed these challenges in her memoir, and has also spoken publicly about the loss of her brother. Her career has also been making a comeback, with her latest film released in January.