The U.S. Drug Enforcement Administration has joined local authorities in investigating the death of actress Hayden Panettiere. Panettiere, 36, died on Sunday, reportedly under circumstances under scrutiny. The DEA is collaborating with the Greenville, South Carolina police department and the local medical examiner’s office.

Authorities are examining potential factors surrounding Panettiere’s passing, including any possible involvement of drugs. The investigation includes checks at the residences of her fiancé, Brian Hickerson, and his family. Panettiere was known for her roles in TV series such as *Heroes* and *Nashville*.

The DEA’s involvement highlights the seriousness of the case, which is being treated as a potential drug-related incident. No official cause of death has been released. The probe continues as authorities seek to determine the exact circumstances of her death.

The case has drawn attention due to Panettiere’s public profile and the nature of the investigation. Further details are expected as the inquiry progresses.