Betsy Arakawa — the classical pianist married to Gene Hackman — died last month of hantavirus pulmonary syndrome, a rare infectious disease linked to rodents, New Mexico authorities announced Friday.

Authorities say hantavirus is blamed in the death of Gene Hackman’s wife, Betsy Arakawa. The rare virus is spread by contact with rodents or their urine or feces.

Betsy Arakawa died from hantavirus pulmonary syndrome, a rare rodent-spread disease with a mortality rate up to 50% in the American Southwest, officials said.