Government and hospital officials didn't comment on the reason for the transfer or Mr. Tsarnaev's current condition, but experts said the higher security offered at Devens likely contributed to the decision.

WSJ: Tsarnaev Is Getting Care and High Security

They were in intensive care for nearly two weeks, she a little longer, before their condition improved enough so we could transfer them out and down the hall to their own rooms.

NEWYORKER: Beginners