Hayden Panettiere, the star of popular TV series including Heroes and Nashville, has died at age 36.
Panettiere's father, Skip, announced the actor's death in a statement provided to ABC News on Sunday. "It is with profound sadness that we share the tragic passing of our beloved Hayden. She was an incredible light and a force of nature who brought immeasurable love and joy to all who knew her — and to the millions who watched her onscreen," his statement said.
The cause of death has not yet been announced. Her publicist, Kasey Kitchen, told NBC News, "There's an investigation ongoing. We should know more tomorrow."
Police in Greenville, S.C., said in a statement that officers "accompanied by EMS personnel, responded to a report of an unresponsive female" at about 1:50 p.m. on Sunday.
The statement added, "Upon arrival, medical assistance was administered; however, the individual, later identified as Hayden Panettiere, was pronounced deceased at the scene."