The investigating agencies should carry out a clear scientific investigation like they did in the Rajiv Gandhi assassination case. Randomly blaming SIMI,HUJI ,LET serves no purpose as this only generalizes the perpetrators of this heinous crime and creates hatred among communities.Let us for a change have people being named rather than off-repeated organizations. I am also shocked by some people on this forum trying to politicize the blasts to garner support for the BJP . Patriotism should always come before politics which doesn't seem to be the case here.