Actor Gene Hackman died of heart disease a full week after his wife died from hantavirus in their New Mexico home, likely unaware that she was dead because he was in the advanced stages of Alzheimer’s disease, authorities revealed Friday.

Before his death, Gene Hackman likely did not know wife Betsy Arakawa—whose cause of death was ruled as hantavirus pulmonary syndrome—died due to his “advanced state of Alzheimer's,” per authorities.

The Santa Fe County Sheriff's Office is currently reviewing footage from the ten deputies who arrived at the scene where Gene Hackman and his wife Betsy were found dead