Further testing is needed to determine the cause of Hayden Panettiere's death. The actress was found unresponsive at an apartment complex. First responders attempted to revive her but were unsuccessful.

Details about the incident are limited, but it is known that police and emergency personnel responded to the scene. The Greenville County Coroner's Office has completed an autopsy, which did not reveal any visible injuries. For more information about the incident and the investigation, readers can refer to the source.

The official cause and manner of Panettiere's death have not been released yet.