File Photo – McHenry County Jail in Woodstock | Photo: Google Street View

The coroner has ruled the cause of death as “undetermined” for a McHenry County Jail inmate, who was found unresponsive and died with a brain injury last year.

McHenry County Coroner Dr. Michael Rein released the final death certificate results on Friday for 31-year-old Colton Sabo.

Sabo was found unresponsive in his cell at the McHenry County Adult Correctional Facility in Woodstock around 3:48 p.m. on July 28.

He was transported to Northwestern Medicine Hospital in McHenry and pronounced dead the following day, Rein said.

A report from the incident said a corrections officer was conducting his clock tour and discovered Sabo unresponsive sitting on his bunk in his cell.

A “Code 3” request for an AED and paramedics was made by radio.

Responding officers lowered Sabo to the ground and began chest compressions, the report said.

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AED pads were applied but “no shock was advised,” the report said.

Officers continued CPR until paramedics arrived approximately 11 minutes later and took over lifesaving measures.

The McHenry County Major Incident Assistance Team (MIAT) conducted an investigation into the death alongside the coroner’s office.

An autopsy was performed on July 31 by Dr. Kristen Escobar, a forensic pathologist.

Rein said the final cause of death is undetermined and manner of death is also undetermined.

Extensive toxicology testing and vitreous electrolytes were non-contributory to Sabo’s death, Rein said.

Sabo was diagnosed with anoxic brain injury and cerebral edema while at the hospital.

“This was determined to have no significant cause to Mr. Sabo’s death,” Rein said Friday.

Sabo had a history of seizure disorder and polysubstance abuse, the coroner added.

At the time of Sabo’s death, the McHenry County Sheriff’s Office did not proactively release any information notifying the community of the death.

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Court records show Sabo was being held in the jail on check fraud and theft charges, for which he had been sentenced to one year in prison just 10 days before his death.