Are you kidding me? There are probably emergency meetings all over DC trying to figure out who they need to kill to keep this from being traced back to the White House or Langley or the top floor of the FBI.
It is likely that there was no direct involvement by the Organs. However think about the school shooters. Many have been shown to have had contact with federal agents in the previous couple of months. Find a crazy and urge him on with the right psychological techniques.