Demi Lovato's Estranged Father Patrick Lovato Passes Away, 'Heart Attack' Singer's Sister Tweets 'Rest in Peace Daddy I Love You'

Demi Lovato's biological father Patrick Lovato has passed away. The news of his death was announced Saturday evening when Demi's sister, Dallas Lovato, tweeted "Rest in peace daddy I love you.." Patrick reportedly died of a heart attack, according to US Weekly. Read More »