The wife of slain Boston Marathon bombing suspect Tamerlan Tsarnaev is "doing everything she can" to assist federal authorities who are investigating the attacks, her lawyer said on Tuesday, according to Reuters.

"She is doing everything she can to assist with the investigation," said Amato DeLuca, the lawyer for Katherine Russell Tsarnaeva. "The report of involvement by her husband and brother-in-law came as an absolute shock to them all."