The deceased inmate was identified as Michael Frazier, 31.
Sheriff Charles Rinehart said he was notified at about 11:30 p.m. that the inmate had been found dead of a hanging in his cell. The inmate was being held in isolation, and a jail employee had last checked at 10:50 p.m. and noted the inmate was lying on his bunk.
Frazier was an inmate of the county at the justice complex, which also includes the regional state correctional facility.
The inmate left behind a written letter. Frazier was listed on the docket of Alcorn County Circuit Court for the July-August term.
Coroner Jay Jones said an autopsy is to be performed today.
The sheriff’s department contacted the Mississippi Bureau of Investigation to handle the case — standard procedure in the death of a county inmate, Rinehart said.
It is the first inmate death at the new facility.