A Florida inmate died on Tuesday after a brutal altercation with another inmate in June that left him brain dead and unable to eat or talk.

NBC 8 reports that James Sutcliff Mills (pictured right) was behind bars for reportedly failing to register as a sex offender. Charles Groucho Allen (pictured left), charged with aggravated battery and two counts of murder, was housed in the same unit as Mills at the Pinellas County Jail when they began arguing over television remote on June 17.

Inmates are required to share one television set within their pod and must decide amongst themselves what channel to watch. Apparently, the pair couldn’t agree.

According to the affidavit, the argument intensified into a physical altercation. Allen is accused of beating Mills so severely that the sex offender was rushed to the hospital where a physician diagnosed with him a traumatic brain injury.

Mills never left the hospital and relied on a feeding tube for nutrition. The beating also left him unable to talk before he died, but a surveillance camera in the jail reportedly captured the incident, and showed Allen striking Mills in the face, which knocked in backward onto the jail’s hard concrete floor. Mills hit his head on the floor and lost consciousness.

According to court documents, Mills was convicted of indecent liberties with a child while in Kansas, in 1992. In 2006, while living in Florida, he failed to register as a sex offender in Pinellas County. In 2018, Mills was charged with failure to obtain and/or update sex offender ID, previous failure to register as a sex offender in Hillsborough County, and failure to report name and/or residence.

Charles Groucho Allen was arrested for the shooting that killed Elizabeth Rosado and her unborn child. With the arrests, the Clearwater Police Department is pleased to not only take Allen off the streets, but also to provide closure for the Rosado family before the holidays. pic.twitter.com/N9PnH6Twx2

— @myclearwaterPD (@myclearwaterPD) December 23, 2017

Allen is accused of shooting and killing a mother and an unborn child, 30-year-old Elizabeth Rosado, during a drive-by shooting. He’s also charged with numerous drug offenses and will likely be charged with Mills’ death after the The Medical Examiner’s Office provides the result of the autopsy.

[Feature Photo: Charles Groucho Allen /James Sutcliffe Mills/Pinellas County Jail]