Polk County Sheriff's detectives are investigating the death of a Polk County Jail inmate that occurred Friday night.
Deputies said 53-year-old Stephen Harry Grimm was arrested by the Polk County Sheriff's Office on October 5, for violating his probation on a DUI charge.
Deputies said Grimm was sentenced to 180 days in jail and had been housed in a cell in the jail in Frostproof since his sentencing.
Grimm violated his probation by failing to provide to his probation officer proof of enrollment in a DUI program, and for reporting to his probation office drunk deputies said.
Deputies said at approximately 5:00 p.m. on Friday, Grimm was observed by detention deputies in his cell with no issues. \
Approximately 15 minutes later, inmates yelled out to deputies that Grimm was not breathing, officials said.
Deputies said they immediately responded to Grimm’s cell and found him unresponsive.
Deputies said they called 911 for an ambulance and began performing CPR. An AED was also utilized.
Grimm never regained consciousness, and was pronounced deceased at the jail by EMS, deputies said.
No foul play is suspected and there is no trauma to his body. An autopsy will be conducted to determine exact cause of death.
Grimm indicated upon being booked into the jail that he has suffered from a heart condition, including a prior heart attack, and had his spleen removed, deputies said.
This is an ongoing death investigation.