The person of interest shown on a surveillance video setting down a bag near the site of the second explosion at the Boston Marathon is described as a young white male wearing a black jacket, a grey hooded sweatshirt and a white or off-white baseball cap backwards. He is 6 feet or 6-feet-2-inches tall with a medium build.
The man appeared to be alone and was talking on a cell phone at the time he set down a bag. When the first explosive device went off, he took off. Moments later, a second explosion happened right where he had been standing.
If you have any information at all, call Boston authorities at 1-800-494-TIPS