Man accused of killing prison guard pleads not guilty

One of the two inmates accused of killing their guards on a prison bus pleads not guilty.

Ricky Dubose, 24, went before a judge Friday morning in Putnam County. He faces two counts of felony murder.

RELATED: Prosecutor: Suspected prison bus killer 'a monster'

According to investigators, Dubose and Donnie Rowe disarmed and killed sergeants Christopher Monica and Curtis Billue to escape a prison transfer bus back in June.

RELATED: Escaped inmates caught in Tennessee

Authorities arrested the men two days later in Tennessee.

The state asked for the death penalty for both men.

RELATED: Prosecutor to seek death penalty for inmates accused of killing corrections officer