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An immigration judge has ordered a potential witness in the investigation into the FBI fatal shooting of a Chechen man last month to leave the United States no later than July 1, and to remain in jail until she departs, raising an outcry from a civil rights group seeking a full accounting of the death. Federal immigration officials arrested Tatiana Igorevna Gruzdeva, a 19-year-old aspiring foreign language teacher, on May 16 for overstaying her visa, a violation they discovered when the FBI and other law enforcement officials began investigating Ibragim Todashev, her roommate in Orlando, about his ties to the Boston Marathon bombings. Six days later, a Boston FBI agent shot and killed 27-year-old Todashev in their apartment.