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Lisa Clements, the wife of Tom Clements, exits from his memorial service with their minister, Pastor Matt Heard, right, and L.M. Jaros, left, during the public memorial for the chief executive of the Department of Corrections held at New Life Church in Colorado Springs, Colo., on Monday, March 25, 2013. Tom Clements was shot and killed when he opened the front door of his home last week in Monument, Colo. (AP Photo/The Gazette, Jerilee Bennett, Pool)

Colorado prison chief slaying

Authorities have arrested a member of a white supremacist gang linked to

the killing Colorado's prisons chief Tom Clements, who was shot answering the door of

his home in April. The main suspect in the slaying, Evan Ebel, was later killed in a shoot-out with police in Texas. (AP)