Why would the FBI, or anyone for that matter, be shocked at this? It’s called damage control.
Did everyone not see this coming? Of course he is silent now when his rights were read he was given an attorney who told him to be quiet. Plain and Simple.
This is why I agree that he should be tried as an enemy combatant. One I do not believe he is a true American Citizen being he took his Oath of Allegiance 7 months ago on 9/11/2012 where it should be quiet obvious to prove he lied during that Oath and took it under false pretenses. Why should Dzhokhar be treated like an American when he obviously never had intentions to be an American.