This could also be right!! I don't think the Pakistanis are involved in this attack. Now in recent days, the Pakistanis are having a brother-hood relationship with Indians, so it is not worthy in blaming them.
The Bombing is done in perfect, sophisticated manner. Lakshar - e - taiba cannot do it in that manner. So there is also a possiblity for Osama - bin - Laden to be involved in that bombing. Let us wait the Indian CBI will dig it out very soon.
