Singer and actor David Cassidy died on 22 November at the age of 67 and his final words have been revealed by his estranged daughter, Katie Cassidy.

The Arrow actor took to social media to pen a touching tribute to her late father and wrote, "Words can't express the solace our family's received from all the love & support during this trying time."

Revealing The Partridge Family actor's final words, she continued, "My father's last words were "So much wasted time". This will be a daily reminder for me to share my gratitude with those I love as to never waste another minute....thank you."

Cassidy and his 30-year-old daughter had a complicated relationship and remained estranged most of their lives. Although Katie was raised by her mother, former model Sherry Williams, and her stepfather, Richard Benedon, David still played a role in her life.

Back in February, the 1970's pop star opened up about his relationship with his daughter to People Magazine. "I've never had a relationship with her. I wasn't her father. I was her biological father but I didn't raise her. She has a completely different life," he said.

Nevertheless, David, who had been battling dementia since 2015, admitted that he is proud of the woman Katie has become. "I'm proud of her. She's very talented. It's hard for me to even accept how old she is now, like 30." Although his relationship with his daughter was less than cordial, he was close to his younger son Beau.

"He's just one of the best people you'll ever meet in your life and it's that that I'm proud of," Cassidy gushed about his 26-year-old son.

The 1970s heartthrob, who rose to fame playing Keith Partridge in the musical sitcom The Partridge Family, was placed in the intensive care unit of a Florida hospital before his death on Saturday morning from liver and kidney failure.

In a statement, his family said the actor was surrounded by his loved ones. "On behalf of the entire Cassidy family, it is with great sadness that we announce the passing of our father, our uncle, and our dear brother, David Cassidy."

"David died surrounded by those he loved, with joy in his heart and free from the pain that had gripped him for so long. Thank you for the abundance and support you have shown him these many years."

Katie Cassidy
Actress Katie Cassidy at the 'Arrow' Press Line during Comic-Con International 2017 Getty