CNN CNN Newsroom April 20, 2014 19:50:00
Contained the bomb. >> reporter: confirmation 36 hours after the attack. >> a couple people came in with a laptop like this and they said and said we think we know who did it. >> reporter: something unmistakable at the second blast site you. >> you see a man walking into the frame of the shot. >> he places that backpack down on the ground, sliding it off his shoulder. a short time later, maybe 15 minutes later, he makes a cell phone call and after that call concludes very shortly thereafter you hear the first bomb go off further down near the finish line. glances quickly to the left and then w...
Source: archive.org