Inmate dies of undisclosed illness at Springfield prison

SPRINGFIELD, S.D. (AP) – The South Dakota Department of Corrections says a 63-year-old inmate has died at the Springfield prison.

Officials say the prisoner, Robbie Thennis, died Monday of an undisclosed illness at the Mike Durfee State Prison. Thennis was sentenced in Bon Homme County in 1992 to serve 25 years for a sexual assault conviction.

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