DZHOKHAR Tsarnaev rose to prominence thanks to the bombing of the Boston Marathon in 2013.
He is being held in what is considered the safest prison in the United States.
Where is Boston Marathon bomber Dzhokhar Tsarnaev?
After being sentenced, Dzhokhar Tsarnaev, a Kyrgyz-American national, was transferred to the Florence High American Penitentiary in Colorado on June 25, 2015.
He was then transferred to ADX Florence, considered the safest prison in the country, on July 17, 2015.
The super-secure supermax prison is known as the Alcatraz of the Rockies.
ADX Florence has a reputation as one of the toughest prisons in the United States, as prisoners are locked up alone 23 hours a day in 12ft by 7ft cells with no windows.
It’s home to some of the world’s most infamous criminals and terrorists, including drug lord El Chapo, hate preacher Abu Hamza, and shoe bomber Richard Reid.
No one has escaped the prison since it was built in the late 1980s, and it is one of the highest security complexes in the world.
A spokesperson for the Federal Bureau of Prisons said at the time that “unique security management requirements” prompted the agency to place Tsarnaev in Colorado instead of the US penitentiary at Terre Haute, in the United States. ‘Indiana, where men sentenced to death are normally held.
When did the Boston Marathon bombing take place and how many people died?
The Boston Marathon bombing took place on April 15, 2013.
Tsarnaev, now 27, was convicted of dozens of crimes in the 2013 terrorist attack that left three people dead and injured more than 260 others, including 17 who lost limbs.
Tsarnaev was convicted of joining his older brother, Tamerlan Tsarnaev, for planting two pressure cooker bombs at the crowded finish line of the 2013 Boston Marathon.
The two bombs, placed 210 meters apart, exploded 14 seconds apart at 2:49 p.m.
Krystle Campbell, 29, Martin Richard, eight, and Lu Lingzi, 23, were killed in the blast.
MIT campus police officer Sean Collier, 26, was shot and killed in a shootout with the brothers days later, which also killed Tamerlan.