As the situation in Boston continues to develop following the explosions at the finish line of the Boston Marathon, one of the most intriguing questions has been who is the man captured in photos high atop a building near the explosion zone?
Was he a media member, a race official or something more sinister?

This photo, posted by @jclong show police and K9 units search a roof top.

This photo has also been circulating showing a man high above the explosion area.