Boston Bomber Moved to Federal Penitentiary in Colorado: Official

Boston Marathon bomber Dzhokhar Tsarnaev on Thursday was moved to a U.S. penitentiary in Florence, Colorado, home to the so-called "Supermax" unit that houses high-risk prisoners, a spokesman for the Bureau of Prisons said. Tsarnaev, 21, was moved to the facility the day after a federal judge in Boston formally sentenced him to death by lethal injection for killing four people and injuring 264 in the April 15, 2013, bombing and its aftermath.