Figure caption, Watch: Hayden Panettiere on her career and growing up in the spotlight
Tributes have been paid to actress Hayden Panettiere, star of the US TV shows Heroes and Nashville, who has died aged 36.
"It is with profound sadness that we share the tragic passing of our beloved Hayden," her father, Skip Panettiere, said in a statement given to the BBC and other media.
"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."
Panettiere played a cheerleader with superpowers in Heroes and had other memorable roles, including in films Remember the Titans and Raising Helen. The details surrounding her death were not immediately available.
Panettiere's father has asked for privacy "as our family takes time to process this unimaginable loss", in a statement issued through her representative.
Paying tribute, Cruel Intentions actress Selma Blair posted on social media: "I love you. Don't be gone. Please".
Singer Jojo described it as "devastating news". On her Instagram story she wrote wrote: "I am so sorry to hear of her passing. Oh My God."
Reaction and tributes to Hayden Panettiere - follow updates
Talk show host Rosie O'Donnell also commented: "'Oh my God – heartbroken..."
Actors' union Sag-Aftra, of which Panettiere was a longstanding member, says "our hearts are with her daughter, family, friends & fans".
Sister, Sister actress Tia Mowry and Celebrity Big Brother star Courtney Stodden both simply shared heartbroken emojis.
Image source, NBC Universal via Getty Images Image caption, Hayden Panettiere as cheerleader Claire Bennet in Heroes in around 2006
Beginning her career as a child actor, Panettiere was just four years old when she was cast on the popular US soap opera One Life to Live.
She voiced Dot in Pixar's A Bug's Life before gaining wider recognition when she starred alongside Denzel Washington in the 2000 sports drama Remember The Titans.
She later rose to wider fame playing cheerleader Claire Bennet in cult sci-fi series Heroes, which ran from 2006 to 2010.
Her role as up-and-coming country singer Juliette Barnes in TV series Nashville earned her two Golden Globe nominations for best supporting actress.
Image source, NBC via Getty Images Panettiere's career spanned three decades, with a string of roles in other hit shows and films, including the Scream horror franchise and romantic comedy I Love You, Beth Cooper.
Her Scream co-star Melissa Barrera paid tribute to the actress in an Instagram story, writing "rest in peace sweet Hayden", alongside a broken heart emoji.
Earlier this year, she released a memoir titled This Is Me: A Reckoning, recounting the struggles of growing up as a child actor and her experiences with addiction, abuse and later recovery.
In May, Panettiere spoke to the BBC's US partner CBS News about her mother taking her as an "eight-month-old baby into audition rooms".
"It went from there and progressed into 50 commercials by the time I was five... It just never stopped," she said.
Panettiere is survived by her daughter Kaya with her ex-partner, Ukrainian former world heavyweight champion boxer, Wladimir Klitschko.
Image source, Katherine Bomboy-Thornton/Disney General Entertainment Content via Getty Images Image caption, The actress played budding country singer Juliette Barnes in the TV series Nashville
In 2015, after giving birth to her…