A report from the Wall Street Journal says investigators have found female DNA on at least one of the bombs used in the Boston Marathon attacks. However, they haven’t determined whose DNA it is or whether that means a woman helped the two suspects carry out the attacks, according to US officials briefed on the probe.
Officials warn that there could be multiple explanations for why the DNA of someone other than the two bombing suspects could have been found on the remains of the exploded devices. For example, genetic material could have come from a store clerk who handled materials used in the bomb or a stray hair that ended up in the bomb.