Hayden Panettiere's Heartbreaking Death: Narcan Found at Scene of Actress' Suspected Overdose

Narcan was reportedly found at the South Carolina residence where Hayden Panettiere was found unresponsive and later died.

The Scream 6 star was pronounced dead at the scene due to a suspected overdose on Sunday, August 16.

According to TMZ, Penettiere — or someone close to her — was treated with Narcan at some point. The nasal spray is a treatment designed to quickly reverse the effects of an opioid emergency.

The medical tool was allegedly found on a mattress.

911 dispatch audio revealed the Nashville alum was in "cardiac arrest" and suffered an apparent "overdose."

Epinephrine, also known as adrenaline, was also reportedly found, which is used to resuscitate those who are in cardiac arrest.

Paramedics attempted to revive her, but were unsuccessful, with Panettiere's time of death being recorded as 2:32 p.m. She was also not transferred to a hospital.

The Heroes star's autopsy was performed on Monday, August 17, and showed no signs of trauma.

"No signs of trauma were discovered that would have contributed to the death. The cause and manner of death remain pending further investigation and the completion of additional studies," the Greenville County Coroner's Office said in a statement.

The coroner also noted the investigation into the "Wake Up Call" singer's death is currently ongoing.

"It is with profound sadness that we share the tragic passing of our beloved Hayden. She was an incredible light and a force of nature who brought immeasurable love and joy to all who knew her — and to the millions who watched her onscreen," Panettiere's rep said in a statement.

A Greenville police spokesperson told NBC News over the weekend that Penettiere was given "medical assistance" at the scene.

“The case is under investigation by the Greenville Police Department in conjunction with the Greenville County Coroner’s Office. The preliminary investigation has not indicated any signs of foul play or suspicious circumstances. An acquaintance of Ms. Panettiere placed the 911 call,” they continued.

Earlier this year, Penettiere was seen struggling to walk and was spotted using crutches during a stopover at LAX. She suffered back issues due to an injury sustained just months before.

She revealed this past May during a Women's Health interview she had "nerve damage in my lower back."

"I quite literally woke up and felt nothing but pins and needles from my waist down," she said. "I wasn't able to bend my toes or lift my foot at all. No one was able to give me a solid answer."