Demi Lovato Speaks Out Following Father's Death

Demi Lovato attends 'The X Factor' Judges press conference at Nassau Veterans Memorial Coliseum on June 20, 2013 in Uniondale, New York -- Getty Images

Demi Lovato is speaking out for the first time since it was revealed that her father passed away over the weekend.

"I feel so humbled to have had so much support from my fans, friends, family and complete strangers" the singer and "X Factor" judge wrote on Twitter.

Adding, "God bless you all, thank you so much."

PHOTOS: Demi Lovato: From Disney To The X Factor

As previously reported on, the "Give Your Heart A Break" singer's older sister, Dallas Lovato, announced the sad news on Twitter on Saturday, writing, "Rest in peace daddy I love you."

Further details regarding the cause of Patrick Lovato's death have yet to be released. According to Us Weekly, the star's father had been battling cancer for many years.

WATCH: Demi Lovato Discusses Ups & Downs In Recovery

In 2009, while speaking with the New York Daily News, Demi said she had long been estranged from her father, who left the family when she was 2 years old.

"The last time I talked to him was two years ago," she said at the time. "You try to have faith in somebody, even when you're the last person that believes in him. But when somebody lets you down after you've been the only one there for them, and so many times, you don't know what else to do."

The singer said she was forced to sever all ties with her father in order to protect herself emotionally.

PHOTOS: Young Hollywood: Then & Now

"I had to cut off all connection. It was hurting me too much," she told the paper.

-- Jesse Spero

Copyright 2013 by NBC Universal, Inc. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.