Katherine Russell. File photo
FBI agents have visited Katherine Russell, the widow of suspected Boston Marathon bomber Tamerlan Tsarnaev, at her family’s home in North Kingstown, R.I., departing with several bags after the visit.
The search comes amid US media reports that investigators are analysing female DNA found on a piece of the pressure-cooker bombs used in the attacks. The Wall Street Journal and CBS News reported that investigators went to Russell’s home to collect a DNA sample from her.
The reports have noted that it is also possible the female DNA came from a retail clerk who sold some of the materials in the bombs, a Marathon spectator, or some other source.
Russell's lawyer said she was doing everything she could to assist with the investigation. She has lived at her parents' house since Tamerlan Tsarnaev was killed several days after the bombing.
The couple lived with their young daughter in an apartment in Cambridge, Massachusetts. Police say they have found bomb material at the residence, according to CNN.