A member of the House Homeland Security Committee says the FBI would have carried out a much more intense investigation of two men now suspected in the Boston Marathon bombings if the Russians had informed Washington of �the mother�s radicalization� and �the son�s radicalization.�

New York Republican Peter King says such information �definitely would have caused the investigation to go further.�

King also tells NBC�s �Today� show he worries about limits on Moscow�s cooperation with Washington in the case, saying �there�s a bit of a dance here.�

The congressman says Moscow doesn�t want to reveal information �that gives us an idea of how they do their intelligence� work, their sources and methods.

King also says it�s difficult to believe that two people could have executed the Boston bombings alone.

(AP)