roger wicker this week. that s the same deadly poison that authorities believe was sent in a letter to president obama. there was a third letter that was sent to a judge in mississippi. both letters were intercepted at screening facilities. and the suspect, whose name we now know and his picture we have paul kevin curtis just appeared in federal court. his lawyer says he is be in the. but the question is how is a guy who moon lights as a elvis impersonators manage to get his hands on a poison so deadly. small drop is lethal to an adult. dr. leonard kohl is expert in bioterrorism and has written the book the anthrax letters, which covers another bioterrorism scare we had in the wake of 9/11. so, that s the question. how do you get this elvis impersonators who gets his hands on ricin and dropped the it in a letter according to prosecutors to three different lawmakers? well, elvis impersonator or not, it s not so difficult to get ricin. but, how you get it and in
ingredient in a letter that you suspect is dangerous and light fluffy form, do not wave it around, put it down. get yourself cleaned and washed off so that there is no residue on your skin. and, of course, you would call both law enforcement and medical authorities to make sure that you personally are all right dr. kohl who has written this book again called the anthrax letters talking about what happened there says to me that he believes there is only a 50.8. no, i think it was down to 50.01. megyn: 50.01 chance that the man they believed committed that crime who killed himself, military scientist bruce ivins was the one in fact behind it we will talk about that on another day. dr. kohl, thanks for being here. thanks for inviting me. megyn: coming up, the tragedy in boston inspiring one of the greatest narrow on this writers of all time to change his plans for next april. what bill rogers has in mind now. we are hearing frightening eyewitness accounts what happened when that f
[explosion] are you okay? i can t hear. i can t hear. get out of here. please get out of here. oh my god. please get out of here. please get out of here. oh my god. dad, please get out of here. i can t hear. [bleep] i can t hear anything. oh my god. megyn: wow, can you hear that young child crying out begging father to leave the scene. authorities are saying several people have died and another 160 or so people are reported injured. at this hour we are following new developments in boston as well where the investigation is rapidly moving forward. we are learning details about a battery, apparently used to power one of the bombs and getting new information on the search for those responsible. plus, we will take to you capitol hill where attorney general eric holder is now set to testify for the first time since the marathon bombing. ghawfn a moment, texas first. casey stegall is standing by live in the city of west. casey? yeah, megyn. and right now they are st