The female DNA and fingerprints found on a piece of one of the Boston marathon explosives does not match those of Katherine Russell, the 24-year-old widow of Tamerlan Tsarnaev. Russell had been under suspicion following the discovery of female DNA, but her lawyers insist she had "no inkling" of the marathon plot and she has reportedly been cooperating with the FBI. However, John Miller, a former assistant FBI director, told "CBS This Morning" that the woman remains central to the ongoing investigation:
What continues to puzzle the FBI about Russell is what she knew and when, if anything, Miller said. "What they really want to know from her is, you know, here's a woman who dated Tamerlan, who converted to Islam after they were married, who ... lived in the same apartment -- not a big apartment -- where bombs were being constructed and pressure cookers were being bought two or three at a time," Miller said. "They want to know, 'Is it possible all of this was going on concealed from you, or did you know it the whole time?'"
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