Tsarnaev's widow potential Boston bombing accomplice

In this Sunday, April 21, 2013 photo, Katherine Russell Tsarnaev, center, wife of killed Boston Marathon bombing suspect Tamerlan Tsarnaev, exits a car at the home of her parents in North Kingstown, R.I. At left is her father, Warren Russell. Federal authorities have asked to speak with her, and her lawyer said he is discussing with them how to proceed. (AP Photo/Katie Zezima)

May 4, 2013 4:39:03 PM PDT
The FBI is looking at the widow of Tamerlan Tsarnaev as a possible accomplice in the Boston bombings.

Agents want to know what role, if any, Katherine Russell had in the plan.

The Washington Post reports that investigators found al-Qaida's Inspire magazine and other radical Islamic material on her computer.

Russell has stopped cooperating with authorities which has raised suspicion. They're especially interested in a phone call she made to her late husband after the FBI began looking for him.