KINGSTON, Ont. - Officials say an inmate who spent the last several decades in prison has died in a Kingston, Ont., hospital.

A spokeswoman for Warkworth Institution, a medium-security facility in Campbellford, Ont., says 81-year-old James Butt died Wednesday.

Assistant warden Cindy Herrington says Butt had been serving "an indeterminate sentence" for second-degree murder since 1988.

His next of kin have been notified.

The Correctional Service of Canada says it will look into the circumstances of his death.