A federal prisoner is facing the possibility of the death penalty after he was indicted on a charge of murder for a 2003 killing at the U.S. Penitentiary at Atwater.
Samuel Stone was already serving a life sentence for two separate homicides that occurred in 1999 when his cellmate, Michael Anita, was found dead in the prison's special housing unit.
A federal grand jury returned a two-count indictment Thursday charging Stone with first-degree murder and murder by a federal prisoner serving a life sentence.
It's unclear why there was nearly a 9-year delay between the death of Anita and the charges. According to the Department of Justice, the case was extensively investigated by the FBI.