Three days after the Boston Marathon bombing hundreds of federal investigators are now chasing the name behind a face.
Video security clips from a Lord & Taylor department store across the street from the spot where the second bomb exploded show a man acting suspiciously, according to FBI personnel. He drops a bag and then walks away.
Images show him reacting to the first explosion by quickly exiting the site where the second explosion is about to occur.
“The camera from Lord & Taylor is the best source of video so far,” Dot Joyce, a spokeswoman for Boston Mayor Thomas Menino, told The Boston Globe. “All I know is that they are making progress.”
The person in question is a young white man wearing a black jacket, a gray hooded sweatshirt, and a white or off-white baseball cap on backwards, according to CBS News.