this. reporter: brooke let s be abundantly clear here. nobody knows exactly for sure just yet what exactly the authorities here are dealing with whether this is a murder or whether this is a suicide, no one knows for sure. given the way mr. byrd s body was found, that s why the sheriff here says out of an abundance of caution, they called in federal investigators and state investigators to help them. brooke? you can understand given the history and the geography. hopefully questions will be answered in that news conference 40 minutes from now there in mississippi. ed lavandera, my thanks to you. coming up dramatic evidence of the boston bomber s land stand after an intense manhunt including that pressure cooker allegedly thrown at police during the shootout and are the real problems just beginning for congressman aaron schock? the downton abbey inspired republican stepping down amid accusations of misusing taxpayer money and now word of federal