Actress Hayden Panettiere's death is being investigated, with the Drug Enforcement Administration joining the probe. The Greenville County Coroner's Office reported that Panettiere was found in cardiac arrest before her death on Sunday. Further details about the circumstances surrounding her death are available from the source.

The investigation into her death is ongoing, with the involvement of the Drug Enforcement Administration. The source provides more information about the probe into Panettiere's death, which occurred on Sunday.