Oscar-winning actor Gene Hackman died of heart disease a week after his wife Betsy Arakawa died of a rare infectious disease at their home, a medical examiner has said.
Mr Hackman, 95, Ms Arakawa, 64, and one of their dogs were found dead on 26 February in separate rooms of their Santa Fe home in New Mexico.
Mr Hackman's heart disease and the hantavirus pulmonary syndrome that caused Ms Arakawa's death were announced at a press conference at the Santa Fe Sherriff's office.
Dr Heather Jarrell, chief medical examiner for New Mexico, said it was "reasonable to conclude" that Ms Arakawa died of the disease on 11 February.
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Dr Jarrell said Mr Hackman died on 18 February of "hypertensive and atherosclerotic cardiovascular disease, with Alzheimer's disease as a significant contributory factor".
The sheriff told reporters last week that a pathologist determined the last signal from the actor's pacemaker was from 17 February, making it likely that was the last day of the his life.
Mr Hackman and Ms Arakawa, a pianist, had lived in Santa Fe since the 1980s and were active in the city's art community and culinary scene.
In recent years, the couple were seen less often in town as his health deteriorated.
They lived a very private life before their deaths, Santa Fe County Sheriff Adan Mendoza said.
A caretaker at their gated community discovered the couple dead.
Sheriff's deputies found Mr Hackman in the kitchen.
Ms Arakawa and a dog were found in a bathroom, with scattered pills from an open prescription bottle on the bathroom counter.
Both appeared to have suddenly fallen to the floor and neither showed signs of blunt force trauma.
One door was found ajar at the back of the house and two of the couple's surviving dogs had used it to move in and out of the house, Mr Mendoza said.
Mr Hackman, a former Marine known for his raspy voice, appeared in more than 80 films, as well as on television and the stage during a lengthy career that started in the early 1960s.
He earned his first Oscar nomination for his breakout role as the brother of bank robber Clyde Barrow in 1967's Bonnie and Clyde.
He won an Oscar for best actor in 1972 for his portrayal of detective Popeye Doyle in The French Connection and in 1993 won an Oscar for best supporting actor for Unforgiven.
Additional reporting PA
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