Actor Gene Hackman, who was found in his New Mexico home along with his wife, Betsy Arakawa, died of severe heart disease, with advanced Alzheimer’s disease as a significant contributing factor, and media reports Tuesday show new details about when Arakawa died.

SANTA FE, N.M. (AP) — 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.

New Mexico medical investigators estimated Arakawa died Feb. 11, but she appeared to have contacted the clinic the next day, a sheriff's official said.