CINCINNATI, OH (FOX19) - A Cincinnati man convicted in the beating death of his 16-year-old girlfriend has died in prison and an investigation is underway, state prison officials said Tuesday.
William Arnold, 39, was found dead in his cell at the Madison Correctional Institution in London, Ohio a week ago, on Tuesday, Jan. 6, said JoEllen Smith of the Ohio Department of Rehabilitation and Correction.
“Staff performed life saving measures and administered Narcan, however Mr. Arnold was pronounced dead at 7:16 a.m.,” Smith wrote in an email response to a FOX19 NOW inquiry.
“The official cause of death is pending the completion of the autopsy, and there is an investigation into this matter – which is routine practice. There were no signs of foul play and no staff are being investigated at this time.”
Arnold was found guilty of reckless homicide, but not guilty of murder after a 2018 jury trial in Hamilton County.
Hailey was brutally beaten in February 2016. She was a sophomore at St. Bernard-Elmwood Place High School.
According to testimony during Arnold’s trial, Hailey suffered a lacerated liver, collapsed lung, bruising from head to toe and bleeding on her brain.
She was unconscious but survived 15 days in the hospital before dying.
Hailey was leaving the Inner Circle Nightclub on Kellogg Avenue in Cincinnati’s East End when Arnold severely beat her, Hamilton County Prosecutor Joe Deters has said.
Arnold was 34 at the time of the incident. He used his “personal body” and “possible unknown objects” to “cause serious physical harm” to the girl in the 4300 block of Kellogg Avenue, according to the complaint filed by Cincinnati Police at the time of the arrest.
The Hamilton County Coroner ruled her death a homicide as the result of blunt force trauma.