Convicted Boston Marathon bomber Dzhokhar Tsarnaev has been transferred to a Colorado supermax prison, according to federal prison records.
Tsarnaev, 21, was listed Friday as being housed in the United States Penitentiary Administrative Maximum Facility, also known as ADX or "supermax," in Florence, Colorado, according to Bureau of Prisons records.
Tsarnaev was convicted in April and sentenced to death on June 24 for the terror attack that killed three people on April 15, 2013.
The prison is the most restrictive prison in America, and prisoners spend about 23 hours a day in solitary confinement in small cells with a single window.
