People News Slipknot bassist Paul Gray died from morphine and narcotic overdose 06/21/2010 An overdose of morphine and the narcotic painkiller fentanyl caused Slipknot bassist Paul Gray's death in May, the Polk County, Iowa, medical examiner says. Read More RELATED NEWS Jimmy Fallon's 'The Tonight Show' dropping to only four nights a weekAshley Tisdale announces birth of her second childSelena Gomez is a billionaire TAGS: