The 911 response to Hayden Panettiere’s death involved reports of an apparent overdose and cardiac arrest, but authorities have not said what substance was involved or that she intentionally killed herself.
New details emerged Monday, August 17, about the final moments before the Heroes and Nashville actress was pronounced dead at 36.
A friend reportedly found Panettiere unresponsive at a residence in Greenville, South Carolina, and called 911 at approximately 1:51 p.m. on Sunday, August 16. Emergency dispatch communications referred to an “overdose,” an “unresponsive female” and cardiac arrest.
Those details significantly expand what was known immediately after news of her death broke.
However, they don’t answer two of the biggest questions now being asked about Panettiere: What did she overdose on, and did Hayden Panettiere kill herself?
At this point, neither has been established.
What Did Hayden Panettiere’s 911 Call Say?
The emergency response began after a friend found Panettiere unresponsive at the Greenville residence.
TMZ reported, citing law-enforcement sources, that the friend called 911 at around 1:51 p.m. Sunday and reported that Panettiere was unresponsive and in cardiac arrest.
Dispatch audio obtained by media outlets adds another crucial detail.
PEOPLE reported that emergency dispatch communications referred to an “overdose” while responders were being sent to the scene. The dispatch traffic also indicated that CPR was underway.
Panettiere was reportedly in cardiac arrest when emergency personnel arrived.
Advanced life support was administered, but she could not be revived.
The Greenville Police Department subsequently confirmed that officers responded to the residence alongside Greenville County EMS and the Greenville City Fire Department.
Who Called 911 for Hayden Panettiere?
A friend of Panettiere reportedly made the emergency call after finding her unresponsive.
TMZ reported that the friend discovered the actress inside the South Carolina residence and called for help at approximately 1:51 p.m.
The identity of that friend has not been publicly confirmed in the reporting available so far.
The emergency response included EMS personnel, police and firefighters. Photographs obtained by TMZ later showed emergency vehicles at the scene.
Despite efforts to save her, Panettiere was pronounced dead.
Did Hayden Panettiere Overdose?
An overdose was suspected during the emergency response, but an overdose has not yet been officially established as Hayden Panettiere’s final cause of death.
This is an important distinction.
The word “overdose” reportedly appears in dispatch communications. PEOPLE described Panettiere as having suffered an apparent overdose, while TMZ similarly reported that emergency personnel responded to a possible overdose and cardiac arrest.
However, an initial emergency assessment isn’t the same thing as a medical examiner’s final determination.
As of August 17, the Greenville County Coroner’s Office had not publicly announced Panettiere’s official cause and manner of death.
That means the most accurate description right now is suspected or apparent overdose, rather than confirmed fatal overdose.
Did Hayden Panettiere Kill Herself?
There is currently no evidence that Hayden Panettiere intentionally killed herself.
This is perhaps the most important point amid speculation following the release of the dispatch details.
An overdose does not automatically mean suicide.
Overdoses can be accidental, intentional or result from other circumstances. Determining the manner of death is separate from identifying the physiological cause of death.
In Panettiere’s case, police have said that their preliminary investigation found no signs of foul play.
But “no foul play” does not mean authorities have determined that her death was suicide.
It generally means investigators have not found evidence indicating another person caused her death through criminal conduct.
As of August 17, authorities have not classified Panettiere’s death as suicide, and there is no confirmed evidence publicly establishing that she deliberately took a fatal amount of drugs.
Therefore, claims online that “Hayden Panettiere killed herself” go beyond what investigators have actually established.
What Drugs Did Hayden Panettiere Take Before Her Death?
Authorities have not revealed what, if any, drugs were found in Hayden Panettiere’s system when she died.
Although dispatch audio reportedly referred to an overdose, no reliable report has identified a specific substance responsible for the apparent overdose.
There has been no official confirmation that opioids, fentanyl, prescription medication or another drug caused her death.
That information may eventually come from the coroner’s investigation and toxicology testing.
Until then, Panettiere’s documented history of substance use shouldn’t be confused with evidence about what happened on August 16.
What Drugs Did Hayden Panettiere Previously Use?
Panettiere had been unusually open about her previous struggles with opioids and alcohol.
In a major 2022 interview with PEOPLE, she revealed that she had struggled with addiction to both. She described becoming trapped in what she called a “cycle of self-destruction.”
She also revealed a disturbing aspect of her experience growing up in Hollywood.
Panettiere said that when she was approximately 15 years old, someone on her team began giving her what she described as “happy pills” before red-carpet appearances.
She said she didn’t know at the time what the pills were supposed to be.
Panettiere later began drinking alcohol and occasionally taking opioids as her substance use worsened.
Hayden Panettiere Said Her Opioid Use Became a Serious Problem
Panettiere provided more details about her opioid use in a 2023 interview with Women’s Health.
She said an old neck injury had flared up and she began taking opioids because she was experiencing significant pain.
The problem was how quickly her tolerance increased.
Panettiere told the magazine that her tolerance became extremely high in a short period of time, eventually turning her opioid use into a serious problem. She described alternating between opioids and alcohol.
Her substance use eventually had severe consequences.
Panettiere previously revealed that she underwent treatment and suffered serious health complications during the worst period of her addiction.
What Kind of Opioids Did Hayden Panettiere Take?
This is where reports about Panettiere’s drug history should be handled carefully.
Panettiere publicly described herself as having an opioid addiction, but the major interviews documenting her addiction generally did not establish a comprehensive list of specific opioid drugs she used.
So it would be misleading to claim that she regularly used a particular opioid unless supported by a direct statement or medical record.
What is firmly documented is:
- Panettiere said she used opioids.
- She also struggled heavily with alcohol.
- She said she was given unidentified “happy pills” when she was a teenager.
- She later took opioids while dealing with pain from a neck injury.
- Her opioid tolerance eventually became dangerously high.
- She sought professional treatment for addiction.
None of those facts establish which substance, if any, was involved in her death.
Hayden Panettiere Had Previously Warned How Serious Her Addiction Became
Panettiere continued speaking publicly about her addiction years after initially revealing it.
In May 2026, while promoting her memoir This Is Me: A Reckoning, she revealed that a doctor had once given her a frightening warning about the consequences of her drinking.
According to PEOPLE, Panettiere recalled being warned that she could be dead within years if she didn’t stop.
Her recovery had been difficult.
But by 2024, PEOPLE described Panettiere as being proud of the progress she had made after seeking treatment for opioid addiction and other struggles.
In another 2024 interview following the death of her younger brother Jansen, PEOPLE reported that Panettiere had been sober and returning to work before his unexpected death devastated her.
That history makes the apparent-overdose report particularly tragic, but it still doesn’t establish exactly what happened on August 16.
Was Fentanyl Involved in Hayden Panettiere’s Death?
There is currently no confirmed evidence that fentanyl caused Hayden Panettiere’s death.
The same applies to other specific opioids or prescription medications.
The newly reported dispatch communications establish that emergency responders were dealing with what was described as an apparent overdose and cardiac arrest. They don’t publicly establish the substance involved.
A toxicology examination may eventually answer that question.
Until those findings are released, connecting Panettiere’s previous opioid addiction to a specific drug involved in her death would be speculation.
Was Hayden Panettiere’s Death an Accidental Overdose?
Authorities have not yet determined publicly whether Panettiere’s death was accidental.
There are effectively two separate questions that investigators and the coroner must answer.
The first is the cause of death — the medical reason she died.
The second is the manner of death, which can be classified in categories such as natural, accidental, suicide, homicide or undetermined.
The 911 dispatch audio provides evidence that an overdose was suspected when emergency personnel responded.
It does not establish intent.
That’s why neither “Hayden Panettiere committed suicide” nor “Hayden Panettiere died from an accidental overdose” can currently be stated as fact.
Police Say There Were No Signs of Foul Play
There is at least one significant finding from the initial police investigation.
The Greenville Police Department said investigators found no signs of foul play in Panettiere’s death.
That substantially narrows one part of the investigation, but it still doesn’t establish whether her death resulted from an accidental overdose, another medical event or something else.
Her official cause of death remains pending.
So, What Happened to Hayden Panettiere?
Based on information available as of August 17, 2026, a friend found Hayden Panettiere unresponsive at a Greenville, South Carolina, residence on Sunday afternoon.
A 911 call was made at approximately 1:51 p.m.
Emergency dispatch communications reportedly referred to an overdose and cardiac arrest, while CPR and advanced life-support efforts were undertaken. Panettiere could not be revived.
Police have reported no signs of foul play.
But several critical facts remain unknown.
Authorities have not identified the drug involved, have not officially confirmed an overdose as the final cause of death and have not classified Panettiere’s death as suicide.
Panettiere’s previous opioid and alcohol addiction is well documented because she chose to discuss it publicly. But her past addiction alone cannot answer what happened during the final hours of her life.
For now, the 911 dispatch information provides the clearest new clue about the circumstances surrounding her death — while the coroner’s findings will be needed to answer the larger question of exactly how Hayden Panettiere died.
