An inmate already serving time for killing a fellow prisoner is guilty of killing another cellmate in an Escambia County jail.
The jury deliberated for eight hours before convicting 41-year-old Amos Robinson of second-degree murder T^Hursday.
Authorities say Robinson beat and strangled 29-year-old Sang Nguyen in the cell they shared during November 2004.
Prosecutors say Robinson killed Nguyen following a fight regarding a sexual matter.
Robinson was sentenced to life in prison without parole. He's already serving two consecutive life sentences.
He was convicted of second-degree murder in 2000 for killing a fellow inmate in Washington County.
Robinson was behind bars at that time for a 1983 first-degree murder, kidnapping and robbery conviction.