Gene Hackman and his wife Betsy Arakawa both tested negative for carbon monoxide after their deaths, Adan Mendoza, the sheriff of Santa Fe County in New Mexico, said at a press conference on Friday, Feb. 28.

As details slowly emerged about the death in New Mexico of legendary actor Gene Hackman, a two-time Oscar winner whose career spanned five decades, tributes poured in from the entertainment world Thursday for a man who was a towering figure in the industry.