A cause of death has been established for Hackman's dog that was found dead alongside the actor and his wife last month.

Gene Hackman and his wife Betsy Arakawa's dog Zinna's cause of death has been revealed. The 12-year-old kelpie mix was found dead alongside Gene and Betsy in their $3.8 million Santa Fe home on February 26.

Gene Hackman​ died of heart disease and Betsy Arakawa's cause of death was hantavirus pulmonary syndrome, officials said.