they acted on their own to defend islam from attack. at least those are the initial indications. cnn has learned that marathon bombing suspect dzhokhar tsarnaev is now communicating with investigators. a government official tells our jake tapper that tsarnaev has told law enforcement that his older brother tamerlan was the driving force behind last monday's attack. he also said that no foreign terror groups were involved and he indicated that their motivation was to defend islam. tsarnaev wounded and unable to talk in a hospital bed, he is charged with using a weapon of mass destruction and malicious destruction of property. those are counts that could bring him the death penalty. meantime this morning, there is some good news. residents and people who work on boylston street which is just behind me right there, those people who live and work there, they will be allowed back in today. it could be a few more days or at least a day before the general public is allowed to go back, or that street opens for business.