as we all know. 48% of people, according to the washington post after the boston bombings worry the government is going to too far. and 41% are afraid our government will not go far enough. if they had more ability to watch over people, they could have stopped these guys from killing and injuring these people to begin with. erin, there s a forever strain between liberty and security in our country. and that particularly gets tested at a time when something like boston or after september 11th. i m reminded of one of the most beautiful sayings i ever heard at cambridge university in massachusetts. laws are the restraints that make us free, which is an amazing paradox, if you think a restraint can make us free. that s what civil society is. when times are tense and there s a security risk to our country i err on the side of law enforcement.
she has the same thought that must be nagging at police. i think it s really hard for two boys to plan all that on their own. reporter: you think they must have had help? i believe so. now, paula, do you know what investigators have found so far in terms of evidence from the explosives? that is, quote, unquote, the holy grail for them right now. reporter: two very important locations. one not far from here where the bombs went off. that shootout on laurel street. erin, the fbi made very clear to me, look, finding out where those explosives come from are a huge part of this investigation. it can point to whether or not there are other people involved in this plot. is there some kind of bombmaker out there, either in the united states or perhaps even in russia that they don t know about? that bombing signature, erin, is so crucial at this point. they, in terms of executing any search warrants right now have
battery. there was a battery there, a remote control there. obviously, as far as we can tell, there was certainly something on the pressure cooker. there were probably a lot of handlers in the chains of commerce as all these products went to market. it s not to speculate. all we know is that they have dna. they re not sure what it means and it belongs to a female. erin? joe johns, thank you very much. as we get ready to go to deb feyerick, forensic expert a few moments ago told me there s a big difference between skin cell dna and blood dna. blood dna could have indicated that this came from a victim. skin cell dna, as joe ind indicated, from someone along the manufacturering line or someone involved in the making of the bomb. a possible link between tamerlan tsarnaev, the older brother, and a jihadist in
wearing hijab. she was not, in any way, kind of confined from speaking with me. look, erin, this is a very superficial impression, i completely admit it. i have to emphasize that this was not a formal sit-down interview. i surprised these people. they were very upset and agitated and i tried to ask a lot of questions about all of the things we want to know the answers to. and they just didn t want to go there. so, the story is not over. there were a lot of questions we still have to answer. but at least you have a sense of this person better than anyone else. we appreciate you sharing it with us. thanks, christian. thanks. authorities tracing the suspect s activities in the weeks before the bombing are now focusing on the tsarnaev brother s home in cambridge, that small apartment we ve been talking about. if, as suspected, they planned the bombings in that apartment, did they leave behind crucial
something very specific from katie russel s home? yes, erin, we saw fbi going in with evidence-gathering equipment. that included a black case that one of these investigators was hugging against her chest when she came out. there was also a clear, plastic sillen dar that looked like a two-liter soda bottle. but this plastic bag that looked like dna samples. dna samples was very clearly written on that bag, erin. obviously, everyone is going to be asking a lot of questions about what the significance of that could be in light of our reporting on the dna and the bomb. we know that katie russel left the home with investigators or the same time as investigators. she s now returned back. do you know where they went? they went to her attorney s office where she was meeting