Female DNA has been found on a fragment of one of the pressure cooker bombs created by Tamerlan and Dzhokhar Tsarnaev to set off at the finish line of the Boston Marathon on April, 15, law enforcement told CNN.

Although, investigators are looking into the matter, they maintain that the new evidence does not necessarily implicate the woman whose DNA it matches. It's possible that the DNA could have found its way into the bomb material by any woman who touched any item that eventually went into the bomb. For instance, even if Tamerlan's widow Katherine Russell's DNA is found to be a match for the DNA taken from the bomb, it won't necessarily indicate that she participated in the bomb's construction. Authorties have collected samples from both Russell and her 3-year-old daughter.

Russell has yet to personally speak to the media, but she has flatly denied any knowledge of her late husband's intention or plans to carry out the devastating bombing in downtown Boston. She is reportedly fully cooperating with authorities as they continue their investigation.

It's also possible that the DNA could be from one of the victims of the blast at the marathon, John Jay College of Criminal Justice DNA expert Lawrence Kobilinsky told CNN.

The investigation into the inspiration and possible accomplices to the Boston Marathon bombing is ongoing, with authorities continuing to probe into the family history and acquaintances of the two suspects. Tamerlan Tsarnaev died during a firefight with police on Thursday, April 19. His younger brother and accomplice, Dzhokar Tsarnaev, is currently being held at a Federal Bureau of Prisons medical center in Devens, Md.

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