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An inmate died early Friday morning after an apparent suicide at the Utah State Prison.

Officers conducting a count of prisoners found Matthew Lynn Johnston, 36, hanging and unresponsive in his cell in the Olympus Facility at approximately 4 a.m., officials said.

Officers and medical staff responded and initiated CPR. Unified Fire Department also responded.

Johnston was pronounced dead at 4:25 a.m.

Unified Police Department is investigating the case, as is protocol. The Utah Department of Corrections' Law Enforcement Bureau is assisting in the investigation.

An initial review shows officers responded properly when they became aware of the incident.

Johnston was sentenced to a five-years-to-life prison term last October, after pleading guilty to first-degree felony rape, court records show.