The attack hypothesis had defenitely its own inconsistencies from the beginning. Those who were probing into the incident are reported to have re-done the event by throwing petrol in to a coach and setting it on fire to see how it may have been set on fire if indeed that was the case. It was reported that the possibility of an attack and fire from outside was found to be highly improbable. Glad that the final report confirms this theory. Prasad.