(ANAMOSA) – The Iowa Department of Corrections reports a man being incarcerated on robbery charges died Tuesday night, as the result of an apparent suicide. 52-year old Calvin Pearson was pronounced dead due at 8:03-p.m., at the Jones Regional Medical Center where he had been taken.

Pearson had been incarcerated at the Anamosa State Penitentiary for two convictions of Robbery- 2nd Degree from Johnson County. His incarceration began on November 2, 2010.

The department conducts an investigation into all inmate suicides, and an autopsy will be conducted.