The Nevada Department of Corrections says an inmate died last week at the Northern Nevada Correctional Center in Carson City.

Authorities say 77-year-old Donald C. Hennan died Thursday at the Regional Medical Facility inside the correctional center.

Hennan was committed from Lyon County on July 21, 1999 and was serving a sentence of 20 years to life with the possibility of parole, consecutive with 10 years to life with possibility of parole for sexual assault victim under 16 and lewdness with a minor. 

An autopsy is being scheduled to determine the cause of death.

Family members were notified.