Legendary Hollywood actor Gene Hackman and his wife, Betsy Arakawa, were found dead in their Santa Fe, New Mexico, home Wednesday, prompting investigating officials to call their deaths "suspicious."

Gene Hackman and his wife, Betsy Arakawa, tested negative for carbon monoxide poisoning, the Santa Fe Sheriffs Department in New Mexico said Friday, one day after they were found dead with their dog.

Gene Hackman and his wife, classical pianist Betsy Arakawa, tested negative for carbon monoxide, according to the Santa Fe Sheriff's Department. And the Oscar-winning actor likely died about nine days before his body was discovered by authorities.