EDWARDSVILLE, Ill. (AP) – A Missouri man has been sentenced to 50 years in prison for killing another inmate while both men were being held in an Illinois jail.

Madison County State’s Attorney Tom Gibbons said 32-year-old Terrence T. Lee of Jennings, Missouri, pleaded guilty Thursday to one count of first-degree murder and one count of armed robbery. Lee was charged in July with the death of 61-year-old inmate John E. Newsome Sr. at the Madison County Jail in Edwardsville. Authorities have said Newsome was beaten to death.

At the time of the murder, Lee was being held at the jail on charges he fatally shot a man during a 2014 robbery.

The (Alton) Telegraph reports (http://bit.ly/2d6Hggh ) that as part of a plea deal, authorities agreed to drop the 2014 murder charge.