CNN national security analyst Peter Bergen said that the explosions today at the Boston Marathon, which killed three and injured more than 100 people, could have been the work of al Qaeda terrorists or right-wing extremists, depending on the type of bomb (video below).
According to Bergen, if the bombs included hydrogen peroxide, then it was probably al Qaeda, but if it was another kind of explosive device, then it may be U.S. right-wing extremists, reports Mediaite.com.
"Once the device, if it a device, is found; what kind of explosives were used," said Bergen. "So for instance, if it was hydrogen peroxide, this is a signature of al Qaeda. If it was more conventional explosives, which are much harder to get hold of now, that might be some other kind of right-wing extremist. We've also seen, for instance, right-wing groups trying to attack the Martin Luther King parade in Oregon in 2010."
The conservative website BreitBart.com reacted angrily to Bergen's suggestion that right wing extremists could possibly be behind the explosions:
So Bergen starts off with comparing what happened at the Boston Marathon to Oklahoma City and then suggest right-wing extremism, even though -- like the rest of us -- he knows nothing.