The answer is hell yes.
Via Slate:
Today is the anniversary of the Boston marathon bombing, and the New York Times has a piece on the isolated confinement of surviving suspect Dzhokhar Tsarnaev, who isn’t allowed to speak to or be around other inmates, use TV or radio, or correspond on non-legal matters with anyone besides his family—who he can call and write only once a week—despite little evidence that he could perpetrate further violence via interaction with outsiders.
HT OllieBlog