A mysterious Islamist known as "Misha" says he didn't radicalize accused Boston bomber Tamerlan Tsarnaev, despite earlier reports that he may be involved.

Christian Caryl with the "New York Review of Books" talked to Misha recently in his Rhode Island home. The 39-year-old denied any role in the bombings two weeks ago and denounced the horrific attack.

The man known as 'Misha' had his name come up when people were trying to figure out where Tamerlan Tsarnaev's motive, and new radical beliefs. Other new reports say that Tamerlan had phone conversations with his mother about the bombing, and about radical Islam.