An inmate suspected of participating in the fatal beating of a guard during a prison riot in Mississippi last year has pleaded guilty to rioting.
Prosecutors say Marco Perez-Serrano, also known as Jesus Fernando Ochoa, was the first inmate to attack corrections officer Catlin Carithers during the riot at the privately run Adams County Correctional Facility in Natchez on May 20, 2012.
Carithers died and 20 people were injured as the riot grew to involve hundreds of inmates.
Perez-Serrano pleaded guilty Tuesday in U.S. District Court in Natchez. He faces up to 10 years in prison at sentencing on Nov. 19.
Several other inmates have been charged with participating in the riot.