Forensic Agents News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Believe the bomb went off. the forensic agents, the fbi and atf were here, and picking up physical pieces of evidence. this is a brand new concrete that's been laid down here. they removed that, and they're going to -- they're testing things, the blast pattern, bringing shrapnel out of pieces of stone and concrete. back here, you can see the windows are still blown out. all of that is going to be analyzed so investigators can understand how this device work. they still don't know how exactly the device worked, how it was put together. and the impact of the shrapnel. here a somber mood, people ...

Citizens. erin? >> all right, deb, that will be interesting. at least the mother said that her sons were framed. so no doubt there is going to be serious questions there. i can see a memorial with a lot of flowers. you're at the sight of where the first bomb went off. what are investigators doing? >> reporter: you know, what is fascinating is that we have been keeping an eye on this location since the day the marathon happened. the finish line is not more than 50 feet ahead of me. and what is so strange, so odd is when you look at this location this is believed to be the location where the bom...

>> all right, deb, that will be interesting. at least the mother said that her sons were framed. so no doubt there is going to be serious questions there. i can see a memorial with a lot of flowers. you're at the sight of where the first bomb went off. what are investigators doing? >> reporter: you know, what is fascinating is that we have been keeping an eye on this location since the day the marathon happened. the finish line is not more than 50 feet ahead of me. and what is so strange, so odd is when you look at this location this is believed to be the location where the bomb was placed. in...

Russian newspaper writing this. you can bet we've been calling around to virtually everyone. we did hear from somebody in washington saying, no, we don't comment on the travel of private citizens. erin? >> that will be interesting. at least the mother said that her sons were framed. so no doubt there is going to be serious questions there. i can see a memorial with a lot of flowers. you're at the sight of where the first bomb went off. what are investigators doing? >> reporter: you know, what is fascinating is that we have been keeping an eye on this location since the day the marathon happene...