JACKSONVILLE, Fla. – A 77-year-old inmate at the Duval County Jail died at a hospital on Sunday, the Jacksonville Sheriff’s Office said.
The sheriff’s office identified the inmate as William Miller Jr. and announced his death on Monday.
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According to JSO, Miller began showing signs of illness related to pre-existing cardiac issues weeks after his Nov. 4, 2025, arrest.
JSO said Miller was arrested on the following charges:
- Soliciting a Child via Computer
- Transmission of Material Harmful to a Minor
- Unlawful Use of a Two-Way Communication Device
JSO said medical personnel at the jail evaluated Miller on Nov. 11 and determined he needed to be taken to a hospital for continued treatment.
He died on Sunday, but the cause of death was not immediately available.
The JSO Cold Case Unit is investigating the death as a natural death, based on findings from the Medical Examiner’s Office, JSO said.