On September 12, 2015, the prisoners at Cimarron Correctional Facility in Cushing began to band together for what would be called one of the deadliest prison fights in state history.

There was terror in Terrance Lockett’s voice. The 52-year-old correctional officer had only been on the job for about eight months, and a chaotic and bloody scene was unfolding before him.

The accused shooter in Tuesday’s homicide and manhunt claimed to have ties to criminal networks, including a white nationalist group, according to 2015 court documents.

A 41-year old associate of the Universal Aryan Brotherhood prison gang has been sentenced to nearly five years in prison for violence committed in aid of racketeering.