🚨 HAYDEN PANETTIERE UPDATE: THE ONE PILL INVESTIGATORS BELIEVE KILLED HER

New details surrounding the sudden death of Heroes and Nashville star Hayden Panettiere are painting an even more heartbreaking picture.

According to law-enforcement sources cited by the New York Post and TMZ, investigators believe Hayden may have taken just one oxycodone pill laced with fentanyl on the morning she died.

She was only 36 years old.

Hayden was found unresponsive and in cardiac arrest at a temporary residence in Greenville, South Carolina, on August 16 — just days before what would have been her 37th birthday.

Emergency responders tried to save her.

They couldn’t.

Now investigators are reportedly focusing on something that happened before her death — and on the person who may have supplied the drugs.

Authorities believe Hayden had contact with a longtime drug dealer in Los Angeles who allegedly supplied her with black-market prescription medication.

Investigators are now trying to trace the suspected pill back to its source.

And the DEA has joined the investigation.

The most devastating detail?

Investigators reportedly believe it may have taken only one pill.

One pill that Hayden may have believed was oxycodone.

One pill that investigators suspect contained fentanyl.

And one pill that may have turned a long struggle with addiction into an irreversible tragedy.

But there is still a major unanswered question:

Did Hayden know what she was taking?

Authorities have not released the final toxicology results, so her exact official cause of death has not yet been finalized. The investigation remains active, and officials are reportedly working to determine exactly where the suspected pill came from.

Hayden had spent years publicly discussing addiction and recovery. In her final months, she had even opened up about those struggles in her memoir, This Is Me: A Reckoning.

She had survived so much.

And now investigators are trying to understand how her story ended with a single suspected counterfeit or contaminated pill.

💔 36 years old. One pill. One devastating morning.

And somewhere behind that pill may be the answer to one of the biggest questions still surrounding Hayden Panettiere’s death:

Who supplied it — and did they know what was inside?