Federal prosecutors say an inmate's killing of a guard at a federal prison in Pennsylvania was a calculated slaying that saw the suspect pause to chew a piece of gum he took from the dying man's pocket.
Federal prosecutors detailed the attack in court documents filed Monday, arguing that a jury should see surveillance video showing the 9-minute attack, and 22-minute aftermath in which guard Eric Williams lay dying before other guards arrived.
Jessie Con-ui is charged in the February 2013 stabbing death of Williams at the Canaan federal prison in Waymart.
Defense attorneys don't dispute he killed Williams. But they're opposing the death penalty and claim the stabbing was an angry retaliation for alleged mistreatment by guards, not the calculated slaying prosecutors contend.
A ruling on the video evidence is pending.