Mar 8, 2012 7:55 AM by Kate Richards
Federal prosecutors now say an inmate at the Supermax federal prison, planned the deadly stomping of a fellow prisoner in 2005.
The prison is off Highway 50, in Florence.
But defense attorneys say Dominic Stewart unexpectedly killed of Gregory Joiner in the heat of passion.
According to the Denver Post, a federal jury now has to decide the motive for the killing in the ultra-high-security prison.
Stewart is already serving a life sentence for a second-degree murder he committed in Washington, D.C.