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DNA on Boston explosive doesn’t match Tsarnaev’s widow

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: