JACKSONVILLE BEACH, Fla. — UPDATE: We've learned the name of the man killed in Duval County jail; the convicted child molester was sentenced to life

The Jacksonville Sheriff's Office has arrested an inmate who they say killed his cell-mate inside the Duval County Detention Facility on Tuesday afternoon.

READ MORE: Foul play suspected after inmate kills another inmate at Duval County Jail

Paul Dixon, 43, has been charged with 2nd-degree murder after police say he killed another inmate after an altercation became physical. 

JSO said a third cell-mate was witness to the whole thing. Dixon declined to speak with detectives and requested an attorney, JSO added. 

Police say they were notified about the altercation on the fifth floor of the facility around 11 a.m.

When authorities arrived on the scene, they found that the inmate had died from an apparent "beating."

Dixon was serving time for an incident back in 1993 where he was charged with armed robbery, first-degree murder, shooting into a vehicle, attempted robbery and conspiracy to commit armed robbery. 

In 1994, Dixon pled guilty to his charge of first-degree murder and was sentenced to life in prison.