In the very first police FIR, the incident was viewed as unplanned mob fury. However, a Special Investigating Team (SIT) of the Gujarat police argued that the coach was set on fire as a pre-planned act by a Muslim group, who were said to have stockpiled 140 liters of petrol from the day before for the purpose of killing the kar sevaks.
To look into the matter two panels were adopted: The Nanavati Panel and The Banerjee Panel.
The Gujarat Government, in consultation with Central Government appointed Justice Nanavati and Shah to investigate Godhra and post-Godhra incidents. Nanavati Commission took a lot of time in talking to thousands of people including victims and eye-witnesses, interviewed thousands in an independent manner, finally concluded that Godhra carnage was not an accident but the coach was set on fire by a mob, allegedly Muslims. They also gave a clean chit to Shri Narendra Modi and noted that the efforts done by Government to take control of the situation were appreciable.
Two years after the incident Railway Minister Lalu Prasad Yadav appointed Justice U C Banerjee to investigate Godhra incident. On the eve of election in Railway Minister's home state Bihar, Justice U C Banerjee released a report suggesting fire being an accident which resulted out of cooking being carried within the carriage, and ruled out the possibility of fire having resulted out of any external attack:
"the possibility of an inflammable liquid having been used is completely ruled out as there was first a smell of burning, followed by dense smoke and flames thereafter. This sequence is not possible in case the fire is caused by an inflammable liquid thrown on the floor of the coach or an inflammable object thrown from outside the coach. The "inflammable liquid theory" also gets negated by the statement of some of the passengers who suffered injuries on the upper portion of the body and not the lower body and who crawled towards the door on elbows and could get out without much injury."
This I thought of sharing, coz we must know what all this contention in India is all about. If we are not aware, we are powerless, awareness is might in today's world.
inputs from wikipedia