SANTA FE, N.M. — Actor Gene Hackman died of heart disease a full week after his wife died from hantavirus in their New Mexico hillside home, likely unaware that she was dead because he was in the advanced stages of Alzheimer’s disease, authorities revealed Friday.
Both deaths were ruled to be from natural causes, chief medical examiner Dr. Heather Jarrell said alongside state fire and health officials at a news conference.

Chief Medical Investigator Heather Jarrell with the New Mexico Office of the Medical Investigator answers questions Friday about the investigation into the deaths of actor Gene Hackman and his wife, Betsy Arakawa, during a news conference in Santa Fe, New Mexico.
“Mr. Hackman showed evidence of advanced Alzheimer’s disease,” Jarrell said. “He was in a very poor state of health. He had significant heart disease, and I think ultimately that’s what resulted in his death.”
Authorities didn't suspect foul play after the bodies of Hackman, 95, and Betsy Arakawa, 65, were discovered Feb 26. Immediate tests for carbon monoxide poisoning were negative.
Investigators found that the last known communication and activity from Arakawa was Feb. 11 when she visited a pharmacy, pet store and grocery store before returning to their gated neighborhood that afternoon, Santa Fe County Sheriff Adan Mendoza said Friday.
Arakawa stopped answering emails that day. The couple’s cellphone communications have not yet been analyzed.

Santa Fe County Sheriff Adan Mendoza answers questions Friday about the investigation into the deaths of actor Gene Hackman and his wife, Betsy Arakawa, in Santa Fe, New Mexico.
Hackman's pacemaker last showed signs of activity a week later and that he had an abnormal heart rhythm Feb. 18, the day he likely died, Jarrell said. The couple's bodies were found a little over a week later.
Though there was no reliable way to determine the date and time when both died, all signs point to their deaths coming a week apart, Jarrell said.
“It’s quite possible he was not aware she was deceased,” Jarrell said.
Dr. Michael Baden, a former New York City medical examiner, said he believes Hackman was severely impaired due to Alzheimer’s disease and unable to deal with his wife’s death in the last week of his life.
Most older Americans with dementia live at home, and many receive care from family or friends.

Actor Gene Hackman arrives with his wife, Betsy Arakawa, on Jan. 19, 2003, for the 60th Annual Golden Globe Awards in Beverly Hills, Calif.
Hackman was found in the home’s entryway. His death was tied to heart failure with complications from Alzheimer's disease on an empty stomach.
Arakawa was found in a bathroom. Authorities linked her death to hantavirus pulmonary syndrome, a rare but potentially fatal disease spread by infected rodent droppings. Thyroid medication pills prescribed to Arakawa were found nearby and weren’t listed as contributing to her death, Jarrell said.
Hantavirus typically is reported in spring and summer, often due to exposures that occur when people are near mouse droppings in homes, sheds or poorly ventilated areas. This is the first confirmed case of hantavirus in New Mexico this year.
While hantavirus is found throughout the world, most cases in the U.S. have been found in western states. The virus can cause a severe and sometimes deadly lung infection.
Jarrell said it was not known how quickly Arakawa died.
One of the couple’s three dogs, a kelpie mix named Zinna, also was found dead in a crate in a bathroom closet near Arakawa, while two other dogs survived. Authorities initially misidentified the breed.
Dogs do not get sick from hantavirus, said Erin Phipps, a veterinarian with the New Mexico Health Department. The sheriff considers this an open investigation until they receive results of the dog's necropsy and finish checking into data from personal cellphones retrieved from the home.
When Hackman and Arakawa were found, the bodies were decomposing with some mummification, a consequence of body type and climate in Santa Fe’s especially dry air at an elevation of nearly 7,200 feet.

Santa Fe County deputies remain Feb. 27 outside the house of actor Gene Hackman and his wife, Betsy Arakawa, where the couple was found dead, in Santa Fe, N.M.
“All of us that knew him should have been checking on him,” said Stuart Ashman, co-owner of Artes de Cuba gallery who cherished his encounters with Hackman at a local Pilates exercise studio, where they used to swap stories. “I had no idea. … It's just really sad. And that she died a week before him. My God.”
Dr. Victor Weedn, a forensic pathologist in Virginia, said when two bodies are found at the same time, the usual assumption would be that they died at the same time. But Hackman’s Alzheimer’s disease added a complicating factor: He apparently was unable to seek help after his wife died.
“They died several days apart: One dying of a viral infection, the hantavirus, which can kill quite quickly. And the other death occurring from heart disease. And that too can be a relatively sudden death," Weedn said. "Their (the authorities’) explanation, I thought, was quite clear and plausible. I believe they really discovered what truly happened in this case.”
From a life-changing gig to his surprising second career, these stories from Gene Hackman's life and career should never be forgotten.
Hackman, a Hollywood icon, won two Oscars during a storied career in films including “The French Connection,” “Hoosiers” and “Superman” from the 1960s until his retirement in the early 2000s.
Arakawa, born in Hawaii, studied as a concert pianist, attended the University of Southern California and met Hackman in the mid-1980s while working at a California gym.
Hackman dedicated much of his time in retirement to painting and writing novels far from Hollywood’s social circuit. He served for several years on the board of trustees at the Georgia O’Keeffe Museum in Santa Fe, and he and his wife were investors in local businesses.
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Baumann reported from Bellingham, Washington. Associated Press reporters Jacques Billeaud in Phoenix, John Seewer in Toledo, Ohio, and Carla Johnson in Seattle contributed.
Photos: Gene Hackman

FILE - Actor Gene Hackman discusses the effect of an Academy Award nomination on his career, March 24, 1972. Hackman will turn 80 years on Jan. 30, 2010. (AP Photo/George Brich)

Gene Hackman named "best actor" for his role in "The French Connection"; Jane Fonda named "best actress" for "Klute" seen at the Academy Awards, March 27, 1971 at the Dorothy Chandler Pavilion, Los Angeles. (AP Photo)

Actor Gene hackman and his wife,Fay, arrive at the Music Center in Los Angeles night of April 10,1972 for the Academy Awards ceremony. Hackman is nominated for "best actor" for his role in "The French Connection." (AP Photo)

Gene Hackman leans over to kiss Jane Fonda after they were named "Best Actor " and "Best Actress" a the 44th annual Academy Awards ceremony a the Music Center in Los Angles, April 10, 1972. Hackman received his Oscar for his role in "The French Connection" and Miss Fonda in "Klute". (AP Photo)

Actor Christopher Reeve, left, and co-star Gene Hackman arrive at the premiere of their movie "Superman" in Los Angeles, Ca., on Dec. 15, 1978. (AP Photo/Reed Saxon)

FILE - In this Dec, 6, 1985, file photo, actor Gene Hackman gives fictional Hickory High basketball players instructions during filming of the final game of the movie "Hoosiers" at Hinkle Fieldhouse on the Butler University campus in Indianapolis. “Hoosiers” shot all the way to No. 1 in The Associated Press Top 25 of best sports movies, a one-of-a-kind poll from the news organization known for its rankings of college teams. Released in 1986 and starring Gene Hackman, “Hoosiers” led the tally in results released Friday, April 17, 2020, receiving 46 votes from a 70-person global panel of sports writers and editors who work for the AP. (AP Photo/Tom Strickland, File)

Famous American actor Gene Hackman, right, and his companion Betsy Arakawa take a look over Berlin Wall in the district of Kreuzberg, Monday, March 13, 1989 in Berlin. Gene Hackman stays in West Berlin for shooting to his new movie ?Baggage.? (AP Photo/Lutz Schmidt)

FILE - In this 1993 file photo, actor Gene Hackman is seen. Gene Hackman's publicist says the veteran Oscar-winning actor was briefly hospitalized after a vehicle bumped him from behind while he was riding a bicycle in the Florida Keys, Friday, Jan. 13, 2012. (AP Photo/File)

Actor Gene Hackman at the Golden Globe Awards, Jan. 23, 1993 in Los Angeles, Ca. (AP Photo/Julie Markes)

Clint Eastwood, left, and Gene Hackman hold the three Oscar won for the film "Unforgiven" at the 65 th Annual Academy Awards in Los Angeles Monday,March 29, 1993. Eastwood won Best Director and Best Film, Hackman won Best Supporting Actor. (AP Photo/Douglas C. Pizac)

Gene Hackman accepts his best supporting Oscar for his role in "Unforgiven" at the 65th annual Academy Awards in Los Angeles, Ca., Monday, March 29, 1993. (AP Photo/Bob Galbraith)

Actors Gene Hackman and Keanu Reeves speak with the media during a news conference at the Baltimore Raven's PSI Net Stadium in Baltimore, Friday, Aug. 6, 1999, to mark the start of 12 weeks of shooting for the motion picture, "The Replacements." The Maryland Film Office predicts the movie will pump between $25 million and $30 million into the state's economy. (AP Photo/Greg Nelson)

FILE - Gene Hackman holds his Cecil B. DeMille award at the 60th annual Golden Globe Awards in Beverly Hills, Calif. Jan. 19, 2003. Hackman will turn 80 years on Jan. 30, 2010. (AP Photo/Reed Saxon)