Duval County Inmate Died After Being Found Unresponsive

A 60-year-old inmate facing drug charges passed away after being transported to a hospital from a Jacksonville jail.

Updated on Oct. 1, 2026 in Drug Crime

Bold flat-color editorial illustration of a monolithic concrete institutional facade, evoking the solemnity of custodial safety reviews. — Thomas Trefzer, a 60-year-old man in custody at the Duval County Jail, died on September 24 following an apparent medical emergency. AI Illustration. Upload story photo >

Thomas Trefzer, a 60-year-old man arrested on drug trafficking and DUI charges, died following a medical emergency in his cell. He was found unresponsive at the Duval County Jail on September 24, 2026.

Why it matters

The death of a prisoner in custody triggers mandatory investigative protocols to ensure jail safety and accountability. Officials are currently reviewing the circumstances surrounding the incident as a natural death.

The incident is currently being investigated as a natural death by authorities. Final results regarding the cause of death are pending from the Medical Examiner's Office.

The players

Thomas Trefzer

He was a 60-year-old inmate who was facing charges for drug trafficking and DUI.

Jacksonville Fire Rescue

This local emergency service agency responded to the jail to transport the inmate to the hospital.

The details

Jail staff discovered Thomas Trefzer unresponsive in his cell before contacting the Jacksonville Fire Rescue for emergency transport. Trefzer had been in custody since his arrest on September 16, 2026, for drug trafficking and DUI charges.

Thomas Trefzer was arrested on September 16, 2026.
The inmate was discovered unresponsive in his cell on September 24, 2026.

Legal Context

This investigation into an in-custody death follows standard protocols established for handling jail fatalities. Such reviews are designed to uphold transparency and verify compliance with state standards for inmate care.

The incident at the Duval County Jail is currently under investigation to determine the exact cause of death. Residents should monitor official updates from the medical examiner to understand the outcome of the inquiry.

The takeaway

In-custody deaths are subject to rigorous medical examination to determine the circumstances of the event. Official findings from the Medical Examiner's Office are required before the case can be formally closed.