Everything I've seen so far has them wearing their backpacks. If they have any images of these guys without their packs on, then why don't they release them?
Or, perhaps we have identified the bags in these images with the physical evidence collected at the scene in such a way that ties them together as the source of the explosions.
Can we find any photos of the bags (before or after the explosion) that may have identifiable characteristics to the ones carried by the two guys?
Someone link this together for me because so far, I am not seeing the connections between these bags and the explosions.