ABC News: Female DNA Discovered on Pressure Cooker Bomb
A list of possible accomplices in the Boston marathon bombing investigation is growing.
Now, almost a dozen people are considered persons of interest.
Sources tell ABC News that female DNA was discovered on one of the bombs.
It's unclear if the DNA belongs to a victim, someone who handled the components of the bomb before it was put together, or a co-conspirator.
Meanwhile FBI agents visited the Rhode Island home of dead suspect Tamerlan Tsarnaev's in-laws and carried away several bags.
FBI spokesman Jason Pack confirms agents went to the North Kingstown home of Katherine Russell's parents Monday. Russell is Tsarnaev's widow and has been staying there.
Russell didn't speak as she left her attorneys' office in Providence. Attorney Amato DeLuca says she's doing everything she can to assist with the investigation.
Attorneys have said Russell and her family were in shock when they learned of the allegations against her husband and brother-in-law, Dzhokhar Tsarnaev.
Tamerlan Tsarnaev was killed in a gunbattle with police. Dzhokhar Tsarnaev has been charged with using a weapon of mass destruction. Their mother calls the allegations lies.
The Associated Press Contributed to this Report.
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