photo of possible boston bombers

Note i did not say they were the bombers from but from FBI investigations...these 2 have fingered as the possible culprits.

Investigations are still underway and the FBI is trying hard to get evidence that will nail them.One of the men was carrying a blue duffel bag. The other was wearing a black backpack in a photo taken at 10:53 a.m. In a second photo at 12:30 p.m., he was not.

Authorities know the names of the two men, but do not have enough evidence to make an arrest for Monday’s attack, which killed three and wounded 176.

The bomb is an IED comprising of nails ,ballbearing and a small circuit carefully placed in a black bagpack. The circuit was probably used to ingnite the explosive.Two bombs exploded that day and both comprised of the materials listed above.