Correctional Service Canada (CSC) says an inmate at Stony Mountain Institution appears to have died of natural causes while serving a life sentence.
It says Roger Jackson died Thursday following an illness.
According to CSC, Jackson has been incarcerated since January 1972, for second-degree murder, attempted murder, robbery, robbery with threats of violence, trafficking narcotics, use of a firearm while committing, and uttering forged documents.
Next of kin have been notified.
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CSC says it will be reviewing the circumstances surrounding Jackson’s death, as is common practice whenever an inmate dies.