Female DNA has been found on one of the bomb fragments recovered from the site of the April 15 Boston Marathon bombings, CBS News reports April 30.
While officials are cautiously not making any direct implications, the female DNA does call into question whether the women directly related to the Tsarnaev brothers, including the widow of Tamerlan Tsarnaev, Katherine Russell, were involved.
The DNA could have come from a marathon spectator or a clerk who sold the bomb-making materials. Investigators have also concluded it’s possible it came from a female accomplice.
The widowed Russell is not a suspect in the bombings and has not been charged in the plot. However, in light of the DNA find, FBI agents did meet with Russell at her parents’ Rhode Island home Monday to collect a DNA sample.
Investigators will then compare that sample against the DNA found on the bomb remnant to determine if she ever came in contact with the device.
Surviving bombing suspect Dzhokhar Tsarnaev may have some answers, but he has not talked to investigators, outside of some scribblings on paper, since being read his rights a week ago. He remains isolated in a 10-by-10-foot cell at a federal medical center near Boston.
According to CBS, investigators have also found the mystery man named Misha, who the Tsarnaev family blamed for helping to radicalize Tamerlan. The FBI has now interviewed Misha, and sources say there’s no evidence he’s connected to the Boston attack.