Federal authorities are investigating the death of actress Hayden Panettiere. They are looking into whether she obtained illicit substances from a specific source. The circumstances surrounding her death are still being examined.

Medics were unable to resuscitate her after responding to an emergency call. An autopsy report has not been released yet, as toxicology tests are pending.

Further details about the investigation and the events surrounding her death are available from the Los Angeles Times. Authorities have spoken to several people as part of their inquiry, which is ongoing.