Entertainment NewsReport: John Mahoney’s Cause of Death RevealedSavePrintJohn Mahoney. Joey Foley/Getty ImagesJack PhillipsBreaking News Reporter2/7/2018|Updated: 2/7/2018The cause of death of “Frasier” actor John Mahoney was revealed in a new report on Wednesday, Feb. 7, TMZ reported.Mahoney passed away Sunday in hospice care, according to his publicist.We had a problem loading this article. Please enable javascript or use a different browser. If the issue persists, please visit our help center.