This was one of the most unfortunate thing to be happned, those who r behind that should be Hanged, but rather than blaming each other, why dont we wait till the investigation is done, i have one question how did the police came up with the orginization name who r behind that with in minutes, where as if they knew the orginization then why did they not acted and prevented this from happening, as a matter of fact no one know who has done it, the cops r just comming up with name of orginization, Every one is talking about Muslims being behind this, but why they think Muslims are behind this, why will they do this, What is the benifit. KILLING INNOCENT PEOPLE. Think before u make any Comment.