Oklahoma jail inmate charged after deadly altercation December 24, 2020 GMT ADA, Okla. (AP) — The Oklahoma State Bureau of Investigation said this week it is looking into the death of an inmate who died after a fight with another inmate at the Pontotoc County Jail . The agency announced in a press release late Wednesday that a felony assault charge has been filed against 22-year-old Kalup Born and that additional charges are possible. Investigators say 42-year-old Billy Joe Johnson was severely injured after an altercation with Born earlier this month and died last weekend from his injuries. Born is in custody awaiting trial on a dozen charges related to the kidnapping and killing of a 70-year-old woman in 2017. Born’s attorney in that case couldn’t be reached for comment Thursday.